18022260 has 48 divisors (see below), whose sum is σ = 53121600. Its totient is φ = 4552704.

The previous prime is 18022259. The next prime is 18022297. The reversal of 18022260 is 6222081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6765 + ... + 9044.

It is an arithmetic number, because the mean of its divisors is an integer number (1106700).

Almost surely, 2^18022260 is an apocalyptic number.

18022260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18022260 is an abundant number, since it is smaller than the sum of its proper divisors (35099340).

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

18022260 is a wasteful number, since it uses less digits than its factorization.

18022260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15840 (or 15838 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18022260 is about 4245.2632427212. The cubic root of 18022260 is about 262.1821277021.

The spelling of 18022260 in words is "eighteen million, twenty-two thousand, two hundred sixty".