18879800 has 24 divisors (see below), whose sum is σ = 43896000. Its totient is φ = 7551840.

The previous prime is 18879799. The next prime is 18879811. The reversal of 18879800 is 897881.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47000 + ... + 47399.

It is an arithmetic number, because the mean of its divisors is an integer number (1829000).

Almost surely, 2^18879800 is an apocalyptic number.

18879800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18879800 is an abundant number, since it is smaller than the sum of its proper divisors (25016200).

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

18879800 is a wasteful number, since it uses less digits than its factorization.

18879800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94415 (or 94406 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 18879800 is about 4345.0891820537. The cubic root of 18879800 is about 266.2762690180.

The spelling of 18879800 in words is "eighteen million, eight hundred seventy-nine thousand, eight hundred".