18327344 has 20 divisors (see below), whose sum is σ = 40582224. Its totient is φ = 7854528.

The previous prime is 18327341. The next prime is 18327383. The reversal of 18327344 is 44372381.

It is a self number, because there is not a number n which added to its sum of digits gives 18327344.

It is not an unprimeable number, because it can be changed into a prime (18327341) 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, 81707 + ... + 81930.

Almost surely, 2^18327344 is an apocalyptic number.

18327344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18327344 is an abundant number, since it is smaller than the sum of its proper divisors (22254880).

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

18327344 is a wasteful number, since it uses less digits than its factorization.

18327344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163652 (or 163646 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 18327344 is about 4281.0447323054. The cubic root of 18327344 is about 263.6532791510.

The spelling of 18327344 in words is "eighteen million, three hundred twenty-seven thousand, three hundred forty-four".