57318738 has 24 divisors (see below), whose sum is σ = 117522384. Its totient is φ = 18636960.

The previous prime is 57318733. The next prime is 57318739. The reversal of 57318738 is 83781375.

It is a self number, because there is not a number n which added to its sum of digits gives 57318738.

It is not an unprimeable number, because it can be changed into a prime (57318733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7245 + ... + 12927.

It is an arithmetic number, because the mean of its divisors is an integer number (4896766).

Almost surely, 2^57318738 is an apocalyptic number.

57318738 is an abundant number, since it is smaller than the sum of its proper divisors (60203646).

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

57318738 is a wasteful number, since it uses less digits than its factorization.

57318738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770 (or 5729 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 57318738 is about 7570.9139474703. The cubic root of 57318738 is about 385.5661272637.

The spelling of 57318738 in words is "fifty-seven million, three hundred eighteen thousand, seven hundred thirty-eight".