72709896 has 32 divisors (see below), whose sum is σ = 207743040. Its totient is φ = 20774208.

The previous prime is 72709883. The next prime is 72709919. The reversal of 72709896 is 69890727.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

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, 216231 + ... + 216566.

It is an arithmetic number, because the mean of its divisors is an integer number (6491970).

Almost surely, 2^72709896 is an apocalyptic number.

It is an amenable number.

72709896 is an abundant number, since it is smaller than the sum of its proper divisors (135033144).

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

72709896 is a wasteful number, since it uses less digits than its factorization.

72709896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432813 (or 432809 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 72709896 is about 8527.0097924184. The cubic root of 72709896 is about 417.3795576895.

The spelling of 72709896 in words is "seventy-two million, seven hundred nine thousand, eight hundred ninety-six".