57678920 has 32 divisors (see below), whose sum is σ = 139761720. Its totient is φ = 21296640.

The previous prime is 57678919. The next prime is 57678947. The reversal of 57678920 is 2987675.

It can be written as a sum of positive squares in 4 ways, for example, as 14303524 + 43375396 = 3782^2 + 6586^2 .

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, 54941 + ... + 55980.

Almost surely, 2^57678920 is an apocalyptic number.

It is an amenable number.

57678920 is an abundant number, since it is smaller than the sum of its proper divisors (82082800).

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

57678920 is a wasteful number, since it uses less digits than its factorization.

57678920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110945 (or 110941 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 57678920 is about 7594.6639161980. The cubic root of 57678920 is about 386.3720539552.

The spelling of 57678920 in words is "fifty-seven million, six hundred seventy-eight thousand, nine hundred twenty".