18828664 has 16 divisors (see below), whose sum is σ = 35373600. Its totient is φ = 9395712.

The previous prime is 18828647. The next prime is 18828679. The reversal of 18828664 is 46682881.

It is a self number, because there is not a number n which added to its sum of digits gives 18828664.

It is a congruent number.

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, 2577 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (2210850).

Almost surely, 2^18828664 is an apocalyptic number.

It is an amenable number.

18828664 is a deficient number, since it is larger than the sum of its proper divisors (16544936).

18828664 is a wasteful number, since it uses less digits than its factorization.

18828664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4658 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 18828664 is about 4339.2008480825. The cubic root of 18828664 is about 266.0356482647.

The spelling of 18828664 in words is "eighteen million, eight hundred twenty-eight thousand, six hundred sixty-four".