18839044 has 12 divisors (see below), whose sum is σ = 37678144. Its totient is φ = 8073864.

The previous prime is 18839011. The next prime is 18839059. The reversal of 18839044 is 44093881.

18839044 is an admirable number.

It is a hoax number, since the sum of its digits (37) 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 = 18838994 and 18839012.

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, 336384 + ... + 336439.

Almost surely, 2^18839044 is an apocalyptic number.

18839044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18839044 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.

18839044 is a wasteful number, since it uses less digits than its factorization.

18839044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672834 (or 672832 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 18839044 is about 4340.3967560581. The cubic root of 18839044 is about 266.0845266262.

The spelling of 18839044 in words is "eighteen million, eight hundred thirty-nine thousand, forty-four".