72756904 has 16 divisors (see below), whose sum is σ = 148821120. Its totient is φ = 33071280.

The previous prime is 72756899. The next prime is 72756961. The reversal of 72756904 is 40965727.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413304 + ... + 413479.

It is an arithmetic number, because the mean of its divisors is an integer number (9301320).

Almost surely, 2^72756904 is an apocalyptic number.

It is an amenable number.

72756904 is an abundant number, since it is smaller than the sum of its proper divisors (76064216).

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

72756904 is a wasteful number, since it uses less digits than its factorization.

72756904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826800 (or 826796 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 72756904 is about 8529.7657646620. The cubic root of 72756904 is about 417.4694856205.

The spelling of 72756904 in words is "seventy-two million, seven hundred fifty-six thousand, nine hundred four".