18080860 has 96 divisors (see below), whose sum is σ = 47029248. Its totient is φ = 5698560.

The previous prime is 18080831. The next prime is 18080861. The reversal of 18080860 is 6808081.

18080860 = 295² + 296² + ... + 430².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168927 + ... + 169033.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^18080860 is an apocalyptic number.

18080860 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 18080860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23514624).

18080860 is an abundant number, since it is smaller than the sum of its proper divisors (28948388).

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

18080860 is a wasteful number, since it uses less digits than its factorization.

18080860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 18080860 is about 4252.1594513847. The cubic root of 18080860 is about 262.4659850105.

The spelling of 18080860 in words is "eighteen million, eighty thousand, eight hundred sixty".