72136896 has 56 divisors (see below), whose sum is σ = 205551024. Its totient is φ = 22195200.

The previous prime is 72136873. The next prime is 72136931. The reversal of 72136896 is 69863127.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11955 + ... + 16946.

It is an arithmetic number, because the mean of its divisors is an integer number (3670554).

Almost surely, 2^72136896 is an apocalyptic number.

It is an amenable number.

72136896 is an abundant number, since it is smaller than the sum of its proper divisors (133414128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72136896 is a wasteful number, since it uses less digits than its factorization.

72136896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28929 (or 28919 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 72136896 is about 8493.3442176801. The cubic root of 72136896 is about 416.2802598640.

The spelling of 72136896 in words is "seventy-two million, one hundred thirty-six thousand, eight hundred ninety-six".