18305080 has 32 divisors (see below), whose sum is σ = 41322240. Its totient is φ = 7297920.

The previous prime is 18305071. The next prime is 18305117. The reversal of 18305080 is 8050381.

It is a congruent number.

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, 16297 + ... + 17383.

It is an arithmetic number, because the mean of its divisors is an integer number (1291320).

Almost surely, 2^18305080 is an apocalyptic number.

18305080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18305080 is an abundant number, since it is smaller than the sum of its proper divisors (23017160).

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

18305080 is a wasteful number, since it uses less digits than its factorization.

18305080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18305080 is about 4278.4436422606. The cubic root of 18305080 is about 263.5464741651.

The spelling of 18305080 in words is "eighteen million, three hundred five thousand, eighty".