72785904 has 40 divisors (see below), whose sum is σ = 189310800. Its totient is φ = 24096768.

The previous prime is 72785887. The next prime is 72785917. The reversal of 72785904 is 40958727.

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, 2064 + ... + 12240.

It is an arithmetic number, because the mean of its divisors is an integer number (4732770).

Almost surely, 2^72785904 is an apocalyptic number.

It is an amenable number.

72785904 is an abundant number, since it is smaller than the sum of its proper divisors (116524896).

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

72785904 is a wasteful number, since it uses less digits than its factorization.

72785904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337 (or 10331 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 72785904 is about 8531.4655247501. The cubic root of 72785904 is about 417.5249443067.

The spelling of 72785904 in words is "seventy-two million, seven hundred eighty-five thousand, nine hundred four".