18112864 has 48 divisors (see below), whose sum is σ = 44464896. Its totient is φ = 7056000.

The previous prime is 18112817. The next prime is 18112879. The reversal of 18112864 is 46821181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (926352).

Almost surely, 2^18112864 is an apocalyptic number.

18112864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18112864 is an abundant number, since it is smaller than the sum of its proper divisors (26352032).

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

18112864 is a wasteful number, since it uses less digits than its factorization.

18112864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379 (or 7371 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 18112864 is about 4255.9210518993. The cubic root of 18112864 is about 262.6207529094.

The spelling of 18112864 in words is "eighteen million, one hundred twelve thousand, eight hundred sixty-four".