Seventy-two (72, LXXII) is a natural number following seventy-one and preceding seventy-three. It is a composite number with the divisors being 2, 3, 4, 6, 8, 9, 12, 16, 18, 24 and 36. Its factorization is:

In normal space, the exterior angles of an equilateral pentagon measure 72 degrees each.

Seventy-two is also:

This article is about the number. For the year AD 72, see 72.