18879968 has 24 divisors (see below), whose sum is σ = 37376640. Its totient is φ = 9387520.

The previous prime is 18879919. The next prime is 18880007. The reversal of 18879968 is 86997881.

It is a happy number.

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, 4568 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (1557360).

Almost surely, 2^18879968 is an apocalyptic number.

It is an amenable number.

18879968 is a deficient number, since it is larger than the sum of its proper divisors (18496672).

18879968 is a wasteful number, since it uses less digits than its factorization.

18879968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3282 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 56.

The square root of 18879968 is about 4345.1085141801. The cubic root of 18879968 is about 266.2770588265.

The spelling of 18879968 in words is "eighteen million, eight hundred seventy-nine thousand, nine hundred sixty-eight".