57136388 has 12 divisors (see below), whose sum is σ = 105870492. Its totient is φ = 26887680.

The previous prime is 57136381. The next prime is 57136421. The reversal of 57136388 is 88363175.

57136388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42406144 + 14730244 = 6512^2 + 3838^2 .

It is not an unprimeable number, because it can be changed into a prime (57136381) 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 3 ways as a sum of consecutive naturals, for example, 420053 + ... + 420188.

It is an arithmetic number, because the mean of its divisors is an integer number (8822541).

Almost surely, 2^57136388 is an apocalyptic number.

It is an amenable number.

57136388 is a deficient number, since it is larger than the sum of its proper divisors (48734104).

57136388 is a wasteful number, since it uses less digits than its factorization.

57136388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840262 (or 840260 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 57136388 is about 7558.8615544935. The cubic root of 57136388 is about 385.1568214792.

The spelling of 57136388 in words is "fifty-seven million, one hundred thirty-six thousand, three hundred eighty-eight".