18324992 has 40 divisors (see below), whose sum is σ = 41852976. Its totient is φ = 7852032.

The previous prime is 18324973. The next prime is 18325001. The reversal of 18324992 is 29942381.

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, 1028 + ... + 6140.

Almost surely, 2^18324992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18324992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20926488).

18324992 is an abundant number, since it is smaller than the sum of its proper divisors (23527984).

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

18324992 is an frugal number, since it uses more digits than its factorization.

18324992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138 (or 5122 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 18324992 is about 4280.7700241896. The cubic root of 18324992 is about 263.6420002110.

The spelling of 18324992 in words is "eighteen million, three hundred twenty-four thousand, nine hundred ninety-two".