57620238 has 16 divisors (see below), whose sum is σ = 124105296. Its totient is φ = 17729280.

The previous prime is 57620209. The next prime is 57620257. The reversal of 57620238 is 83202675.

It is a junction number, because it is equal to n+sod(n) for n = 57620199 and 57620208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369283 + ... + 369438.

It is an arithmetic number, because the mean of its divisors is an integer number (7756581).

Almost surely, 2^57620238 is an apocalyptic number.

57620238 is an abundant number, since it is smaller than the sum of its proper divisors (66485058).

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

57620238 is a wasteful number, since it uses less digits than its factorization.

57620238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738739.

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

The square root of 57620238 is about 7590.7995626284. The cubic root of 57620238 is about 386.2409790417.

The spelling of 57620238 in words is "fifty-seven million, six hundred twenty thousand, two hundred thirty-eight".