18286944 has 48 divisors (see below), whose sum is σ = 51699312. Its totient is φ = 5626368.

The previous prime is 18286921. The next prime is 18286963. The reversal of 18286944 is 44968281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 18286896 and 18286905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1077069).

Almost surely, 2^18286944 is an apocalyptic number.

It is an amenable number.

18286944 is an abundant number, since it is smaller than the sum of its proper divisors (33412368).

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

18286944 is a wasteful number, since it uses less digits than its factorization.

18286944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14679 (or 14671 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 18286944 is about 4276.3236547296. The cubic root of 18286944 is about 263.4594080203.

The spelling of 18286944 in words is "eighteen million, two hundred eighty-six thousand, nine hundred forty-four".