72720264 has 32 divisors (see below), whose sum is σ = 184295520. Its totient is φ = 23907456.

The previous prime is 72720257. The next prime is 72720283. The reversal of 72720264 is 46202727.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19002 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (5759235).

Almost surely, 2^72720264 is an apocalyptic number.

It is an amenable number.

72720264 is an abundant number, since it is smaller than the sum of its proper divisors (111575256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72720264 is a wasteful number, since it uses less digits than its factorization.

72720264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41589 (or 41585 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 72720264 is about 8527.6177212631. The cubic root of 72720264 is about 417.3993953632.

The spelling of 72720264 in words is "seventy-two million, seven hundred twenty thousand, two hundred sixty-four".