18312344 has 16 divisors (see below), whose sum is σ = 34397520. Its totient is φ = 9139680.

The previous prime is 18312337. The next prime is 18312353. The reversal of 18312344 is 44321381.

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, 3557 + ... + 7019.

It is an arithmetic number, because the mean of its divisors is an integer number (2149845).

Almost surely, 2^18312344 is an apocalyptic number.

It is an amenable number.

18312344 is a deficient number, since it is larger than the sum of its proper divisors (16085176).

18312344 is a wasteful number, since it uses less digits than its factorization.

18312344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130 (or 4126 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 18312344 is about 4279.2924648825. The cubic root of 18312344 is about 263.5813305804.

The spelling of 18312344 in words is "eighteen million, three hundred twelve thousand, three hundred forty-four".