72986432 has 14 divisors (see below), whose sum is σ = 144832578. Its totient is φ = 36493184.

The previous prime is 72986401. The next prime is 72986443. The reversal of 72986432 is 23468927.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65674816 + 7311616 = 8104^2 + 2704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72986432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570143 + ... + 570270.

Almost surely, 2^72986432 is an apocalyptic number.

It is an amenable number.

72986432 is a deficient number, since it is larger than the sum of its proper divisors (71846146).

72986432 is a wasteful number, since it uses less digits than its factorization.

72986432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140425 (or 1140415 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 72986432 is about 8543.2097012774. The cubic root of 72986432 is about 417.9080252145.

The spelling of 72986432 in words is "seventy-two million, nine hundred eighty-six thousand, four hundred thirty-two".