188838856 has 64 divisors (see below), whose sum is σ = 395642880. Its totient is φ = 84080640.

The previous prime is 188838851. The next prime is 188838857. The reversal of 188838856 is 658838881.

It is a happy number.

It is a super-2 number, since 2×188838856² = 71320227070777472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188838797 and 188838806.

It is not an unprimeable number, because it can be changed into a prime (188838851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197676 + ... + 198628.

It is an arithmetic number, because the mean of its divisors is an integer number (6181920).

Almost surely, 2^188838856 is an apocalyptic number.

It is an amenable number.

188838856 is an abundant number, since it is smaller than the sum of its proper divisors (206804024).

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

188838856 is a wasteful number, since it uses less digits than its factorization.

188838856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1050 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 55.

The square root of 188838856 is about 13741.8650844782. The cubic root of 188838856 is about 573.7162093120.

The spelling of 188838856 in words is "one hundred eighty-eight million, eight hundred thirty-eight thousand, eight hundred fifty-six".