72756924 has 24 divisors (see below), whose sum is σ = 169948800. Its totient is φ = 24226224.

The previous prime is 72756899. The next prime is 72756961. The reversal of 72756924 is 42965727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10777 + ... + 16175.

It is an arithmetic number, because the mean of its divisors is an integer number (7081200).

Almost surely, 2^72756924 is an apocalyptic number.

It is an amenable number.

72756924 is an abundant number, since it is smaller than the sum of its proper divisors (97191876).

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

72756924 is a wasteful number, since it uses less digits than its factorization.

72756924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529 (or 6527 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 72756924 is about 8529.7669370271. The cubic root of 72756924 is about 417.4695238729.

The spelling of 72756924 in words is "seventy-two million, seven hundred fifty-six thousand, nine hundred twenty-four".