72857392 has 10 divisors (see below), whose sum is σ = 141161228. Its totient is φ = 36428688.

The previous prime is 72857383. The next prime is 72857413. The reversal of 72857392 is 29375827.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2276778 + ... + 2276809.

Almost surely, 2^72857392 is an apocalyptic number.

It is an amenable number.

72857392 is a deficient number, since it is larger than the sum of its proper divisors (68303836).

72857392 is a wasteful number, since it uses less digits than its factorization.

72857392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553595 (or 4553589 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 72857392 is about 8535.6541635659. The cubic root of 72857392 is about 417.6615928195.

The spelling of 72857392 in words is "seventy-two million, eight hundred fifty-seven thousand, three hundred ninety-two".