18086856 has 16 divisors (see below), whose sum is σ = 45217200. Its totient is φ = 6028944.

The previous prime is 18086837. The next prime is 18086881. The reversal of 18086856 is 65868081.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376786 + ... + 376833.

It is an arithmetic number, because the mean of its divisors is an integer number (2826075).

Almost surely, 2^18086856 is an apocalyptic number.

It is an amenable number.

18086856 is an abundant number, since it is smaller than the sum of its proper divisors (27130344).

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

18086856 is a wasteful number, since it uses less digits than its factorization.

18086856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753628 (or 753624 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 18086856 is about 4252.8644464643. The cubic root of 18086856 is about 262.4949949159.

The spelling of 18086856 in words is "eighteen million, eighty-six thousand, eight hundred fifty-six".