18086304 has 48 divisors (see below), whose sum is σ = 47712672. Its totient is φ = 5998848.

The previous prime is 18086279. The next prime is 18086357. The reversal of 18086304 is 40368081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×18086304² = 654228784760832, which contains 22 as substring.

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, 27807 + ... + 28449.

It is an arithmetic number, because the mean of its divisors is an integer number (994014).

Almost surely, 2^18086304 is an apocalyptic number.

It is an amenable number.

18086304 is an abundant number, since it is smaller than the sum of its proper divisors (29626368).

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

18086304 is a wasteful number, since it uses less digits than its factorization.

18086304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18086304 is about 4252.7995485327. The cubic root of 18086304 is about 262.4923244921.

The spelling of 18086304 in words is "eighteen million, eighty-six thousand, three hundred four".