57638220 has 24 divisors (see below), whose sum is σ = 161387184. Its totient is φ = 15370176.

The previous prime is 57638209. The next prime is 57638227. The reversal of 57638220 is 2283675.

It is not an unprimeable number, because it can be changed into a prime (57638227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480259 + ... + 480378.

It is an arithmetic number, because the mean of its divisors is an integer number (6724466).

Almost surely, 2^57638220 is an apocalyptic number.

It is an amenable number.

57638220 is an abundant number, since it is smaller than the sum of its proper divisors (103748964).

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

57638220 is a wasteful number, since it uses less digits than its factorization.

57638220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960649 (or 960647 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 57638220 is about 7591.9839304361. The cubic root of 57638220 is about 386.2811539476.

The spelling of 57638220 in words is "fifty-seven million, six hundred thirty-eight thousand, two hundred twenty".