30 (thirty) is the natural number following 29 and preceding 31.

30 is the sum of the first four squares, which makes it a square pyramidal number.

It is a primorial and is the smallest Giuga number.

30 is the smallest sphenic number, and the smallest of the form Failed to parse (Missing texvc executable; please see math/README to configure.): 2\cdot 3\cdot r

Thirty has but one number^{[citation needed]} for which it is the aliquot sum: the square number 841.

Adding up some subsets of its divisors (e.g., 5, 10 and 15) gives 30, hence 30 is a semiperfect number.

30 is the largest number such that all coprimes smaller than itself, except for 1, are prime.

A polygon with thirty sides is called a tricontagon.

The icosahedron and the dodecahedron are Platonic solids with 30 edges. The icosidodecahedron is an Archimedean solid with 30 vertices, and the Tutte–Coxeter graph is a symmetric graph with 30 vertices.

E₈ has Coxeter number 30.

30 is a Harshad number.

Since any group G such that |G| = pⁿm, where p does not divide m, has a subgroup of order pⁿ, and 30 is the only number less than 60 that is not either a prime or of the above form, it is the only candidate for the order of a simple group less than 60 that one needs other methods to reject.

Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American recording artist, entertainer, and businessman. Often referred to as the King of Pop, or by his initials MJ, Jackson is recognized as the most successful entertainer of all time by Guinness World Records. His contribution to music, dance, and fashion, along with a much-publicized personal life, made him a global figure in popular culture for over four decades. The seventh child of the Jackson family, he debuted on the professional music scene along with his brothers as a member of The Jackson 5 in 1964, and began his solo career in 1971.

In the early 1980s, Jackson became a dominant figure in popular music. The music videos for his songs, including those of "Beat It", "Billie Jean", and "Thriller", were credited with transforming the medium into an art form and a promotional tool, and the popularity of these videos helped to bring the relatively new television channel MTV to fame. Videos such as "Black or White" and "Scream" made him a staple on MTV in the 1990s. Through stage performances and music videos, Jackson popularized a number of complicated dance techniques, such as the robot and the moonwalk, to which he gave the name. His distinctive musical sound and vocal style influenced numerous hip hop, post-disco, contemporary R&B, pop and rock artists.

Tarak Mehta (born 1930) is an Indian columnist, humorist, writer and playwright. best known for the column Duniya Na Undha Chasma in Gujarati Language. He has translated and adapted several comedies into Gujarati, and has been well-known figure in the Gujarati theatre.

The humorous weekly column first appeared in Chitralekha in March 1971 and ever since has been looking at contemporary issues from a different perspective. He has published 80 books, over the years, three books are based on the columns he wrote in Gujarati newspaper, Divya Bhaskar while rest were compiled from the stories in Taarak Mehta Ka Ooltah Chashmah.

In 2008 SAB TV, a popular entertainment channel in India, started a show Taarak Mehta Ka Ooltah Chashmah that is based on his column., and soon it became the flagship show of the channel.

He stays in Ahmedabad, Gujarat, where he moved in year 2000, with second wife, Indu of over 30 years, His first wife, Ila who later married Manohar Doshi, (died 2006), also stayed in the same apartment building. He has daughter from his first marriage, Ishani, who stays in US, and has two children, Kushan and Shaili.

The Pogues are an Irish rock band from London, formed in 1982 and fronted by Shane MacGowan. The band reached international prominence in the 1980s and early 1990s. MacGowan left the band in 1991 due to drinking problems but the band continued first with Joe Strummer and then with Spider Stacy on vocals before breaking up in 1996. The band reformed in 2001, and has been playing regularly ever since, most notably on the US East Coast around St Patrick's Day and across the UK and Ireland every December. The group has yet to record any new music and, according to Spider Stacy on Pogues.com, has no inclination to do so.

Their politically tinged music was informed by MacGowan and Stacy's punk backgrounds, yet used traditional Irish instruments such as the tin whistle, cittern, mandolin and accordion.

The Pogues were founded in Kings Cross, a district of North London, in 1982 as Pogue Mahone—pogue mahone being the Anglicisation of the Irish póg mo thóin, meaning "kiss my arse".

The roots of The Pogues were formed when MacGowan (vocals), Peter "Spider" Stacy (tin whistle), and Jem Finer (banjo) were together in an occasional band called The Millwall Chainsaws in the late 1970s after MacGowan and Stacy met in the toilets at a Ramones gig at The Roundhouse in 1977. MacGowan was already with The Nips, though when they broke up in 1980 he concentrated a bit more on Stacy's Millwall Chainsaws who changed their name to The New Republicans. During this period MacGowan and Finer auditioned unsuccessfully for a licence to busk at Covent Garden. In 1982 James Fearnley (accordion) joined MacGowan, Stacy, and Finer, calling the band Pogue Mahone. The new group played their first gig at The Pindar of Wakefield on 4 October 1982.

Maharana Pratap or Pratap Singh (May 24, 1540 – January 19, 1597) was a Hindu ruler of Mewar, a small region in north-western India in the present day state of Rajasthan. In popular Indian culture, Pratap is considered to exemplify the qualities like bravery and chivalry to which Rajputs aspire, especially in context of his opposition to the Akbar. The struggle between Rajput confederacy led by Pratap Singh, and the Mughal Empire under Akbar, has often been characterised in popular Hindutva culture as a struggle between Hindus and the 'invading' Muslims, much on the same lines as the struggle between Shivaji and Aurangzeb a little less than a century later. However, notably, unlike Shivaji, Pratap Singh has also symbolised the pride and prestige of upper caste Hindus in northern India, because of the obvious differences between their lineages - but this allegation have little truth because much of Pratap's own soldiery were recruited from among tribal people like Bhils and backward castes like Lohars, while his own upper caste contemporaries like Man Singh of Amber supported Mughals.