57188394 has 24 divisors (see below), whose sum is σ = 124176000. Its totient is φ = 19021608.

The previous prime is 57188393. The next prime is 57188401. The reversal of 57188394 is 49388175.

It is not an unprimeable number, because it can be changed into a prime (57188393) 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, 5799 + ... + 12165.

It is an arithmetic number, because the mean of its divisors is an integer number (5174000).

Almost surely, 2^57188394 is an apocalyptic number.

57188394 is an abundant number, since it is smaller than the sum of its proper divisors (66987606).

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

57188394 is a wasteful number, since it uses less digits than its factorization.

57188394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6871 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 57188394 is about 7562.3008403528. The cubic root of 57188394 is about 385.2736436546.

The spelling of 57188394 in words is "fifty-seven million, one hundred eighty-eight thousand, three hundred ninety-four".