57479640 has 64 divisors (see below), whose sum is σ = 172942560. Its totient is φ = 15283200.

The previous prime is 57479623. The next prime is 57479641. The reversal of 57479640 is 4697475.

57479640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 57479592 and 57479601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57479641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71722 + ... + 72518.

Almost surely, 2^57479640 is an apocalyptic number.

It is an amenable number.

57479640 is an abundant number, since it is smaller than the sum of its proper divisors (115462920).

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

57479640 is a wasteful number, since it uses less digits than its factorization.

57479640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 57479640 is about 7581.5328265464. The cubic root of 57479640 is about 385.9265701910.

The spelling of 57479640 in words is "fifty-seven million, four hundred seventy-nine thousand, six hundred forty".