18044480 has 112 divisors (see below), whose sum is σ = 47402496. Its totient is φ = 6512640.

The previous prime is 18044479. The next prime is 18044519. The reversal of 18044480 is 8444081.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168587 + ... + 168693.

Almost surely, 2^18044480 is an apocalyptic number.

18044480 is a gapful number since it is divisible by the number (10) 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 18044480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23701248).

18044480 is an abundant number, since it is smaller than the sum of its proper divisors (29358016).

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

18044480 is a wasteful number, since it uses less digits than its factorization.

18044480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 18044480 is about 4247.8794709831. The cubic root of 18044480 is about 262.2898332898.

The spelling of 18044480 in words is "eighteen million, forty-four thousand, four hundred eighty".