18324988 has 12 divisors (see below), whose sum is σ = 34984152. Its totient is φ = 8329520.

The previous prime is 18324973. The next prime is 18325001. The reversal of 18324988 is 88942381.

It is a congruent number.

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, 208195 + ... + 208282.

It is an arithmetic number, because the mean of its divisors is an integer number (2915346).

Almost surely, 2^18324988 is an apocalyptic number.

It is an amenable number.

18324988 is a deficient number, since it is larger than the sum of its proper divisors (16659164).

18324988 is a wasteful number, since it uses less digits than its factorization.

18324988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416492 (or 416490 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 18324988 is about 4280.7695569839. The cubic root of 18324988 is about 263.6419810283.

The spelling of 18324988 in words is "eighteen million, three hundred twenty-four thousand, nine hundred eighty-eight".