18808312 has 16 divisors (see below), whose sum is σ = 35424360. Its totient is φ = 9361824.

The previous prime is 18808303. The next prime is 18808333. The reversal of 18808312 is 21380881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363 + ... + 6994.

Almost surely, 2^18808312 is an apocalyptic number.

It is an amenable number.

18808312 is a deficient number, since it is larger than the sum of its proper divisors (16616048).

18808312 is a wasteful number, since it uses less digits than its factorization.

18808312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10590 (or 10586 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 18808312 is about 4336.8550817384. The cubic root of 18808312 is about 265.9397606066.

The spelling of 18808312 in words is "eighteen million, eight hundred eight thousand, three hundred twelve".