57639372 has 48 divisors (see below), whose sum is σ = 154129920. Its totient is φ = 16422912.

The previous prime is 57639353. The next prime is 57639397. The reversal of 57639372 is 27393675.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40204 + ... + 41612.

It is an arithmetic number, because the mean of its divisors is an integer number (3211040).

Almost surely, 2^57639372 is an apocalyptic number.

It is an amenable number.

57639372 is an abundant number, since it is smaller than the sum of its proper divisors (96490548).

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

57639372 is a wasteful number, since it uses less digits than its factorization.

57639372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1908 counting only the distinct ones).

The product of its digits is 238140, while the sum is 42.

The square root of 57639372 is about 7592.0597995537. The cubic root of 57639372 is about 386.2837274305.

The spelling of 57639372 in words is "fifty-seven million, six hundred thirty-nine thousand, three hundred seventy-two".