72267724 has 12 divisors (see below), whose sum is σ = 126685944. Its totient is φ = 36071744.

The previous prime is 72267709. The next prime is 72267749. The reversal of 72267724 is 42776227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12862 + ... + 17605.

It is an arithmetic number, because the mean of its divisors is an integer number (10557162).

Almost surely, 2^72267724 is an apocalyptic number.

It is an amenable number.

72267724 is a deficient number, since it is larger than the sum of its proper divisors (54418220).

72267724 is a wasteful number, since it uses less digits than its factorization.

72267724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31064 (or 31062 counting only the distinct ones).

The product of its digits is 65856, while the sum is 37.

The square root of 72267724 is about 8501.0425243025. The cubic root of 72267724 is about 416.5317641857.

The spelling of 72267724 in words is "seventy-two million, two hundred sixty-seven thousand, seven hundred twenty-four".