18104044 has 12 divisors (see below), whose sum is σ = 36208144. Its totient is φ = 7758864.

The previous prime is 18104039. The next prime is 18104057. The reversal of 18104044 is 44040181.

18104044 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323259 + ... + 323314.

Almost surely, 2^18104044 is an apocalyptic number.

18104044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18104044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18104044 is a wasteful number, since it uses less digits than its factorization.

18104044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646584 (or 646582 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 18104044 is about 4254.8847222927. The cubic root of 18104044 is about 262.5781185490.

The spelling of 18104044 in words is "eighteen million, one hundred four thousand, forty-four".