56810138 has 64 divisors (see below), whose sum is σ = 113743872. Its totient is φ = 20623680.

The previous prime is 56810113. The next prime is 56810167. The reversal of 56810138 is 83101865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152120 + ... + 152492.

It is an arithmetic number, because the mean of its divisors is an integer number (1777248).

Almost surely, 2^56810138 is an apocalyptic number.

56810138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

56810138 is a wasteful number, since it uses less digits than its factorization.

56810138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 56810138 is about 7537.2500290225. The cubic root of 56810138 is about 384.4223371581.

The spelling of 56810138 in words is "fifty-six million, eight hundred ten thousand, one hundred thirty-eight".