72887972 has 12 divisors (see below), whose sum is σ = 128746800. Its totient is φ = 36103176.

The previous prime is 72887939. The next prime is 72887977. The reversal of 72887972 is 27978827.

It is a self number, because there is not a number n which added to its sum of digits gives 72887972.

It is not an unprimeable number, because it can be changed into a prime (72887977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84722 + ... + 85577.

It is an arithmetic number, because the mean of its divisors is an integer number (10728900).

Almost surely, 2^72887972 is an apocalyptic number.

It is an amenable number.

72887972 is a deficient number, since it is larger than the sum of its proper divisors (55858828).

72887972 is a wasteful number, since it uses less digits than its factorization.

72887972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170410 (or 170408 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The square root of 72887972 is about 8537.4452853298. The cubic root of 72887972 is about 417.7200188518.

The spelling of 72887972 in words is "seventy-two million, eight hundred eighty-seven thousand, nine hundred seventy-two".