72707672 has 16 divisors (see below), whose sum is σ = 136873800. Its totient is φ = 36208000.

The previous prime is 72707659. The next prime is 72707683. The reversal of 72707672 is 27670727.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16097 + ... + 20112.

Almost surely, 2^72707672 is an apocalyptic number.

It is an amenable number.

72707672 is a deficient number, since it is larger than the sum of its proper divisors (64166128).

72707672 is a wasteful number, since it uses less digits than its factorization.

72707672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36466 (or 36462 counting only the distinct ones).

The product of its (nonzero) digits is 57624, while the sum is 38.

The square root of 72707672 is about 8526.8793822828. The cubic root of 72707672 is about 417.3753021404.

The spelling of 72707672 in words is "seventy-two million, seven hundred seven thousand, six hundred seventy-two".