18012232 has 16 divisors (see below), whose sum is σ = 38597760. Its totient is φ = 7719504.

The previous prime is 18012217. The next prime is 18012251. The reversal of 18012232 is 23221081.

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, 160768 + ... + 160879.

It is an arithmetic number, because the mean of its divisors is an integer number (2412360).

Almost surely, 2^18012232 is an apocalyptic number.

It is an amenable number.

18012232 is an abundant number, since it is smaller than the sum of its proper divisors (20585528).

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

18012232 is a wasteful number, since it uses less digits than its factorization.

18012232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321660 (or 321656 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18012232 is about 4244.0819973229. The cubic root of 18012232 is about 262.1334906246.

The spelling of 18012232 in words is "eighteen million, twelve thousand, two hundred thirty-two".