18045080 has 32 divisors (see below), whose sum is σ = 40737600. Its totient is φ = 7193856.

The previous prime is 18045067. The next prime is 18045173. The reversal of 18045080 is 8054081.

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, 15809 + ... + 16911.

It is an arithmetic number, because the mean of its divisors is an integer number (1273050).

Almost surely, 2^18045080 is an apocalyptic number.

18045080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18045080 is an abundant number, since it is smaller than the sum of its proper divisors (22692520).

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

18045080 is a wasteful number, since it uses less digits than its factorization.

18045080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18045080 is about 4247.9500938688. The cubic root of 18045080 is about 262.2927404052.

Subtracting from 18045080 its reverse (8054081), we obtain a palindrome (9990999).

The spelling of 18045080 in words is "eighteen million, forty-five thousand, eighty".