18108232 has 16 divisors (see below), whose sum is σ = 34011900. Its totient is φ = 9038400.

The previous prime is 18108229. The next prime is 18108239. The reversal of 18108232 is 23280181.

It can be written as a sum of positive squares in 2 ways, for example, as 17926756 + 181476 = 4234^2 + 426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18108197 and 18108206.

It is not an unprimeable number, because it can be changed into a prime (18108239) 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, 3994 + ... + 7222.

Almost surely, 2^18108232 is an apocalyptic number.

It is an amenable number.

18108232 is a deficient number, since it is larger than the sum of its proper divisors (15903668).

18108232 is a wasteful number, since it uses less digits than its factorization.

18108232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936 (or 3932 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18108232 is about 4255.3768340771. The cubic root of 18108232 is about 262.5983643456.

The spelling of 18108232 in words is "eighteen million, one hundred eight thousand, two hundred thirty-two".