57731238 has 32 divisors (see below), whose sum is σ = 132433920. Its totient is φ = 18622440.

The previous prime is 57731237. The next prime is 57731249. The reversal of 57731238 is 83213775.

57731238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×57731238³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57731237) 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 15 ways as a sum of consecutive naturals, for example, 15570 + ... + 18917.

It is an arithmetic number, because the mean of its divisors is an integer number (4138560).

Almost surely, 2^57731238 is an apocalyptic number.

57731238 is an abundant number, since it is smaller than the sum of its proper divisors (74702682).

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

57731238 is a wasteful number, since it uses less digits than its factorization.

57731238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34529 (or 34523 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 57731238 is about 7598.1075275361. The cubic root of 57731238 is about 386.4888389921.

The spelling of 57731238 in words is "fifty-seven million, seven hundred thirty-one thousand, two hundred thirty-eight".