72907188 has 48 divisors (see below), whose sum is σ = 175116480. Its totient is φ = 23595264.

The previous prime is 72907187. The next prime is 72907193. The reversal of 72907188 is 88170927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72907187) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 117856 + ... + 118472.

It is an arithmetic number, because the mean of its divisors is an integer number (3648260).

Almost surely, 2^72907188 is an apocalyptic number.

It is an amenable number.

72907188 is an abundant number, since it is smaller than the sum of its proper divisors (102209292).

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

72907188 is a wasteful number, since it uses less digits than its factorization.

72907188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 72907188 is about 8538.5706063720. The cubic root of 72907188 is about 417.7567245083.

The spelling of 72907188 in words is "seventy-two million, nine hundred seven thousand, one hundred eighty-eight".