72132904 has 16 divisors (see below), whose sum is σ = 143205300. Its totient is φ = 33944832.

The previous prime is 72132901. The next prime is 72132917. The reversal of 72132904 is 40923127.

It can be written as a sum of positive squares in 2 ways, for example, as 68856804 + 3276100 = 8298^2 + 1810^2 .

It is not an unprimeable number, because it can be changed into a prime (72132901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265059 + ... + 265330.

Almost surely, 2^72132904 is an apocalyptic number.

It is an amenable number.

72132904 is a deficient number, since it is larger than the sum of its proper divisors (71072396).

72132904 is a wasteful number, since it uses less digits than its factorization.

72132904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530412 (or 530408 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 72132904 is about 8493.1092068806. The cubic root of 72132904 is about 416.2725808466.

The spelling of 72132904 in words is "seventy-two million, one hundred thirty-two thousand, nine hundred four".