18102056 has 16 divisors (see below), whose sum is σ = 38790240. Its totient is φ = 7758000.

The previous prime is 18102053. The next prime is 18102083. The reversal of 18102056 is 65020181.

It is not an unprimeable number, because it can be changed into a prime (18102053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161570 + ... + 161681.

It is an arithmetic number, because the mean of its divisors is an integer number (2424390).

Almost surely, 2^18102056 is an apocalyptic number.

It is an amenable number.

18102056 is an abundant number, since it is smaller than the sum of its proper divisors (20688184).

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

18102056 is a wasteful number, since it uses less digits than its factorization.

18102056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323264 (or 323260 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 18102056 is about 4254.6511020294. The cubic root of 18102056 is about 262.5685069873.

The spelling of 18102056 in words is "eighteen million, one hundred two thousand, fifty-six".