72239684 has 12 divisors (see below), whose sum is σ = 137912208. Its totient is φ = 32836200.

The previous prime is 72239669. The next prime is 72239701. The reversal of 72239684 is 48693227.

It is a happy number.

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, 820862 + ... + 820949.

It is an arithmetic number, because the mean of its divisors is an integer number (11492684).

Almost surely, 2^72239684 is an apocalyptic number.

It is an amenable number.

72239684 is a deficient number, since it is larger than the sum of its proper divisors (65672524).

72239684 is a wasteful number, since it uses less digits than its factorization.

72239684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641826 (or 1641824 counting only the distinct ones).

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

The square root of 72239684 is about 8499.3931548082. The cubic root of 72239684 is about 416.4778855387.

The spelling of 72239684 in words is "seventy-two million, two hundred thirty-nine thousand, six hundred eighty-four".