30 (number) - Wikipedia
https://en.wikipedia.org/wiki/30_(number)
WebIn mathematics. 30 is a square pyramidal number. 30 is an even, composite, pronic number. With 2, 3, and 5 as its prime factors, it is a regular number and the first sphenic number, the smallest of the form , where r is a prime greater than 3. It has an aliquot sum of 42, which is the second sphenic number. It is also:
DA: 42 PA: 20 MOZ Rank: 1 Up or Down: Up