57278632 has 16 divisors (see below), whose sum is σ = 108692640. Its totient is φ = 28293936.

The previous prime is 57278629. The next prime is 57278653. The reversal of 57278632 is 23687275.

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, 42468 + ... + 43795.

It is an arithmetic number, because the mean of its divisors is an integer number (6793290).

Almost surely, 2^57278632 is an apocalyptic number.

It is an amenable number.

57278632 is a deficient number, since it is larger than the sum of its proper divisors (51414008).

57278632 is a wasteful number, since it uses less digits than its factorization.

57278632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86352 (or 86348 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 57278632 is about 7568.2647945219. The cubic root of 57278632 is about 385.4761792312.

The spelling of 57278632 in words is "fifty-seven million, two hundred seventy-eight thousand, six hundred thirty-two".