57638636 has 48 divisors (see below), whose sum is σ = 117355392. Its totient is φ = 24480000.

The previous prime is 57638629. The next prime is 57638639. The reversal of 57638636 is 63683675.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (57638639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187595 + ... + 187901.

It is an arithmetic number, because the mean of its divisors is an integer number (2444904).

Almost surely, 2^57638636 is an apocalyptic number.

It is an amenable number.

57638636 is an abundant number, since it is smaller than the sum of its proper divisors (59716756).

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

57638636 is a wasteful number, since it uses less digits than its factorization.

57638636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 588 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 57638636 is about 7592.0113277049. The cubic root of 57638636 is about 386.2820832648.

The spelling of 57638636 in words is "fifty-seven million, six hundred thirty-eight thousand, six hundred thirty-six".