18479960 has 64 divisors (see below), whose sum is σ = 43740000. Its totient is φ = 7017472.

The previous prime is 18479959. The next prime is 18480001. The reversal of 18479960 is 6997481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103151 + ... + 103329.

Almost surely, 2^18479960 is an apocalyptic number.

18479960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18479960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21870000).

18479960 is an abundant number, since it is smaller than the sum of its proper divisors (25260040).

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

18479960 is a wasteful number, since it uses less digits than its factorization.

18479960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 18479960 is about 4298.8323996174. The cubic root of 18479960 is about 264.3830909040.

The spelling of 18479960 in words is "eighteen million, four hundred seventy-nine thousand, nine hundred sixty".