18808560 has 120 divisors (see below), whose sum is σ = 63951264. Its totient is φ = 4953600.

The previous prime is 18808541. The next prime is 18808571. The reversal of 18808560 is 6580881.

18808560 is a `hidden beast` number, since 18 + 80 + 8 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108634 + ... + 108806.

Almost surely, 2^18808560 is an apocalyptic number.

18808560 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 18808560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31975632).

18808560 is an abundant number, since it is smaller than the sum of its proper divisors (45142704).

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

18808560 is a wasteful number, since it uses less digits than its factorization.

18808560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 18808560 is about 4336.8836737916. The cubic root of 18808560 is about 265.9409294652.

It can be divided in two parts, 1880 and 8560, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 18808560 in words is "eighteen million, eight hundred eight thousand, five hundred sixty".