72909608 has 16 divisors (see below), whose sum is σ = 136911060. Its totient is φ = 36400000.

The previous prime is 72909589. The next prime is 72909611. The reversal of 72909608 is 80690927.

It can be written as a sum of positive squares in 2 ways, for example, as 71605444 + 1304164 = 8462^2 + 1142^2 .

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, 893 + ... + 12108.

Almost surely, 2^72909608 is an apocalyptic number.

It is an amenable number.

72909608 is a deficient number, since it is larger than the sum of its proper divisors (64001452).

72909608 is a wasteful number, since it uses less digits than its factorization.

72909608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708 (or 13704 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 72909608 is about 8538.7123150976. The cubic root of 72909608 is about 417.7613466410.

The spelling of 72909608 in words is "seventy-two million, nine hundred nine thousand, six hundred eight".