18336928 has 24 divisors (see below), whose sum is σ = 36216180. Its totient is φ = 9139200.

The previous prime is 18336917. The next prime is 18336947. The reversal of 18336928 is 82963381.

It can be written as a sum of positive squares in 2 ways, for example, as 18215824 + 121104 = 4268^2 + 348^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12118 + ... + 13546.

Almost surely, 2^18336928 is an apocalyptic number.

It is an amenable number.

18336928 is a deficient number, since it is larger than the sum of its proper divisors (17879252).

18336928 is a wasteful number, since it uses less digits than its factorization.

18336928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1832 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 18336928 is about 4282.1639389449. The cubic root of 18336928 is about 263.6992289387.

The spelling of 18336928 in words is "eighteen million, three hundred thirty-six thousand, nine hundred twenty-eight".