57899640 has 64 divisors (see below), whose sum is σ = 174765600. Its totient is φ = 15345152.

The previous prime is 57899627. The next prime is 57899651. The reversal of 57899640 is 4699875.

It is a self number, because there is not a number n which added to its sum of digits gives 57899640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19366 + ... + 22154.

Almost surely, 2^57899640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57899640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87382800).

57899640 is an abundant number, since it is smaller than the sum of its proper divisors (116865960).

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

57899640 is a wasteful number, since it uses less digits than its factorization.

57899640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 57899640 is about 7609.1812963025. The cubic root of 57899640 is about 386.8642701179.

The spelling of 57899640 in words is "fifty-seven million, eight hundred ninety-nine thousand, six hundred forty".