57838728 has 16 divisors (see below), whose sum is σ = 144596880. Its totient is φ = 19279568.

The previous prime is 57838699. The next prime is 57838747. The reversal of 57838728 is 82783875.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204950 + ... + 1204997.

It is an arithmetic number, because the mean of its divisors is an integer number (9037305).

Almost surely, 2^57838728 is an apocalyptic number.

It is an amenable number.

57838728 is an abundant number, since it is smaller than the sum of its proper divisors (86758152).

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

57838728 is a wasteful number, since it uses less digits than its factorization.

57838728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409956 (or 2409952 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 57838728 is about 7605.1777099552. The cubic root of 57838728 is about 386.7285585958.

The spelling of 57838728 in words is "fifty-seven million, eight hundred thirty-eight thousand, seven hundred twenty-eight".