18444324 has 12 divisors (see below), whose sum is σ = 43036784. Its totient is φ = 6148104.

The previous prime is 18444323. The next prime is 18444329. The reversal of 18444324 is 42344481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18444291 and 18444300.

It is not an unprimeable number, because it can be changed into a prime (18444323) 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, 768502 + ... + 768525.

Almost surely, 2^18444324 is an apocalyptic number.

It is an amenable number.

18444324 is an abundant number, since it is smaller than the sum of its proper divisors (24592460).

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

18444324 is a wasteful number, since it uses less digits than its factorization.

18444324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537034 (or 1537032 counting only the distinct ones).

The product of its digits is 12288, while the sum is 30.

The square root of 18444324 is about 4294.6855530993. The cubic root of 18444324 is about 264.2130396995.

The spelling of 18444324 in words is "eighteen million, four hundred forty-four thousand, three hundred twenty-four".