57913728 has 64 divisors (see below), whose sum is σ = 156198720. Its totient is φ = 19008000.

The previous prime is 57913727. The next prime is 57913741. The reversal of 57913728 is 82731975.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 57913728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57913721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24603 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (2440605).

Almost surely, 2^57913728 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 57913728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78099360).

57913728 is an abundant number, since it is smaller than the sum of its proper divisors (98284992).

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

57913728 is a wasteful number, since it uses less digits than its factorization.

57913728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335 (or 2323 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 57913728 is about 7610.1069637686. The cubic root of 57913728 is about 386.8956445321.

The spelling of 57913728 in words is "fifty-seven million, nine hundred thirteen thousand, seven hundred twenty-eight".