18008880 has 40 divisors (see below), whose sum is σ = 55828272. Its totient is φ = 4802304.

The previous prime is 18008869. The next prime is 18008911. The reversal of 18008880 is 8880081.

It is a tau number, because it is divible by the number of its divisors (40).

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, 37279 + ... + 37758.

Almost surely, 2^18008880 is an apocalyptic number.

18008880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18008880 is an abundant number, since it is smaller than the sum of its proper divisors (37819392).

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

18008880 is a wasteful number, since it uses less digits than its factorization.

18008880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75053 (or 75047 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 33.

The square root of 18008880 is about 4243.6870761167. The cubic root of 18008880 is about 262.1172289721.

The spelling of 18008880 in words is "eighteen million, eight thousand, eight hundred eighty".