18800560 has 20 divisors (see below), whose sum is σ = 43711488. Its totient is φ = 7520192.

The previous prime is 18800513. The next prime is 18800563. The reversal of 18800560 is 6500881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×18800560² = 706922112627200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18800563) 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, 117424 + ... + 117583.

Almost surely, 2^18800560 is an apocalyptic number.

18800560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18800560 is an abundant number, since it is smaller than the sum of its proper divisors (24910928).

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

18800560 is a wasteful number, since it uses less digits than its factorization.

18800560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235020 (or 235014 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18800560 is about 4335.9612544394. The cubic root of 18800560 is about 265.9032191683.

The spelling of 18800560 in words is "eighteen million, eight hundred thousand, five hundred sixty".