57128188 has 24 divisors (see below), whose sum is σ = 107956800. Its totient is φ = 26295360.

The previous prime is 57128161. The next prime is 57128189. The reversal of 57128188 is 88182175.

It is a self number, because there is not a number n which added to its sum of digits gives 57128188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57128189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21138 + ... + 23686.

It is an arithmetic number, because the mean of its divisors is an integer number (4498200).

Almost surely, 2^57128188 is an apocalyptic number.

It is an amenable number.

57128188 is a deficient number, since it is larger than the sum of its proper divisors (50828612).

57128188 is a wasteful number, since it uses less digits than its factorization.

57128188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2995 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 57128188 is about 7558.3191253082. The cubic root of 57128188 is about 385.1383951771.

The spelling of 57128188 in words is "fifty-seven million, one hundred twenty-eight thousand, one hundred eighty-eight".