57288738 has 16 divisors (see below), whose sum is σ = 123391296. Its totient is φ = 17627280.

The previous prime is 57288733. The next prime is 57288739. The reversal of 57288738 is 83788275.

It is not an unprimeable number, because it can be changed into a prime (57288733) 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, 367158 + ... + 367313.

It is an arithmetic number, because the mean of its divisors is an integer number (7711956).

Almost surely, 2^57288738 is an apocalyptic number.

57288738 is an abundant number, since it is smaller than the sum of its proper divisors (66102558).

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

57288738 is a wasteful number, since it uses less digits than its factorization.

57288738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734489.

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

The square root of 57288738 is about 7568.9324214185. The cubic root of 57288738 is about 385.4988484946.

The spelling of 57288738 in words is "fifty-seven million, two hundred eighty-eight thousand, seven hundred thirty-eight".