57238790 has 16 divisors (see below), whose sum is σ = 117748512. Its totient is φ = 19624704.

The previous prime is 57238771. The next prime is 57238799. The reversal of 57238790 is 9783275.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57238799) 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, 408779 + ... + 408918.

It is an arithmetic number, because the mean of its divisors is an integer number (7359282).

Almost surely, 2^57238790 is an apocalyptic number.

57238790 is an abundant number, since it is smaller than the sum of its proper divisors (60509722).

57238790 is a wasteful number, since it uses less digits than its factorization.

57238790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817711.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 57238790 is about 7565.6321612936. The cubic root of 57238790 is about 385.3867817036.

The spelling of 57238790 in words is "fifty-seven million, two hundred thirty-eight thousand, seven hundred ninety".