18479888 has 20 divisors (see below), whose sum is σ = 40920000. Its totient is φ = 7919904.

The previous prime is 18479887. The next prime is 18479891. The reversal of 18479888 is 88897481.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18479887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82388 + ... + 82611.

It is an arithmetic number, because the mean of its divisors is an integer number (2046000).

Almost surely, 2^18479888 is an apocalyptic number.

It is an amenable number.

18479888 is an abundant number, since it is smaller than the sum of its proper divisors (22440112).

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

18479888 is a wasteful number, since it uses less digits than its factorization.

18479888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165014 (or 165008 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 53.

The square root of 18479888 is about 4298.8240252423. The cubic root of 18479888 is about 264.3827475481.

The spelling of 18479888 in words is "eighteen million, four hundred seventy-nine thousand, eight hundred eighty-eight".