18322808 has 16 divisors (see below), whose sum is σ = 39263280. Its totient is φ = 7852608.

The previous prime is 18322771. The next prime is 18322813. The reversal of 18322808 is 80822381.

It is a congruent 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, 163541 + ... + 163652.

It is an arithmetic number, because the mean of its divisors is an integer number (2453955).

Almost surely, 2^18322808 is an apocalyptic number.

It is an amenable number.

18322808 is an abundant number, since it is smaller than the sum of its proper divisors (20940472).

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

18322808 is a wasteful number, since it uses less digits than its factorization.

18322808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327206 (or 327202 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 18322808 is about 4280.5149222961. The cubic root of 18322808 is about 263.6315260453.

The spelling of 18322808 in words is "eighteen million, three hundred twenty-two thousand, eight hundred eight".