18232986 has 16 divisors (see below), whose sum is σ = 36568224. Its totient is φ = 6060624.

The previous prime is 18232979. The next prime is 18232999. The reversal of 18232986 is 68923281.

It is a happy 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, 1836 + ... + 6311.

It is an arithmetic number, because the mean of its divisors is an integer number (2285514).

Almost surely, 2^18232986 is an apocalyptic number.

18232986 is an abundant number, since it is smaller than the sum of its proper divisors (18335238).

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

18232986 is a wasteful number, since it uses less digits than its factorization.

18232986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525.

The product of its digits is 41472, while the sum is 39.

The square root of 18232986 is about 4270.0100702457. The cubic root of 18232986 is about 263.2000290247.

The spelling of 18232986 in words is "eighteen million, two hundred thirty-two thousand, nine hundred eighty-six".