18768144 has 40 divisors (see below), whose sum is σ = 50052352. Its totient is φ = 6053760.

The previous prime is 18768137. The next prime is 18768163. The reversal of 18768144 is 44186781.

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, 4819 + ... + 7794.

Almost surely, 2^18768144 is an apocalyptic number.

It is an amenable number.

18768144 is an abundant number, since it is smaller than the sum of its proper divisors (31284208).

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

18768144 is a wasteful number, since it uses less digits than its factorization.

18768144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655 (or 12649 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 18768144 is about 4332.2216009803. The cubic root of 18768144 is about 265.7503074565.

The spelling of 18768144 in words is "eighteen million, seven hundred sixty-eight thousand, one hundred forty-four".