18044232 has 64 divisors (see below), whose sum is σ = 47308800. Its totient is φ = 5728320.

The previous prime is 18044209. The next prime is 18044233. The reversal of 18044232 is 23244081.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (18044233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58623 + ... + 58929.

It is an arithmetic number, because the mean of its divisors is an integer number (739200).

Almost surely, 2^18044232 is an apocalyptic number.

18044232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18044232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23654400).

18044232 is an abundant number, since it is smaller than the sum of its proper divisors (29264568).

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

18044232 is a wasteful number, since it uses less digits than its factorization.

18044232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 18044232 is about 4247.8502798474. The cubic root of 18044232 is about 262.2886316633.

The spelling of 18044232 in words is "eighteen million, forty-four thousand, two hundred thirty-two".