72388732 has 24 divisors (see below), whose sum is σ = 137043200. Its totient is φ = 33258816.

The previous prime is 72388697. The next prime is 72388733. The reversal of 72388732 is 23788327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72388733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8869 + ... + 14947.

Almost surely, 2^72388732 is an apocalyptic number.

It is an amenable number.

72388732 is a deficient number, since it is larger than the sum of its proper divisors (64654468).

72388732 is a wasteful number, since it uses less digits than its factorization.

72388732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325 (or 6323 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 72388732 is about 8508.1567921613. The cubic root of 72388732 is about 416.7641204226.

The spelling of 72388732 in words is "seventy-two million, three hundred eighty-eight thousand, seven hundred thirty-two".