188731056 has 40 divisors (see below), whose sum is σ = 488284720. Its totient is φ = 62816256.

The previous prime is 188731019. The next prime is 188731073. The reversal of 188731056 is 650137881.

It is a super-2 number, since 2×188731056² = 71238822997750272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34356 + ... + 39468.

It is an arithmetic number, because the mean of its divisors is an integer number (12207118).

Almost surely, 2^188731056 is an apocalyptic number.

188731056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

188731056 is an abundant number, since it is smaller than the sum of its proper divisors (299553664).

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

188731056 is a wasteful number, since it uses less digits than its factorization.

188731056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893 (or 5887 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 188731056 is about 13737.9422039838. The cubic root of 188731056 is about 573.6070185432.

The spelling of 188731056 in words is "one hundred eighty-eight million, seven hundred thirty-one thousand, fifty-six".