18082272 has 48 divisors (see below), whose sum is σ = 51120720. Its totient is φ = 5563392.

The previous prime is 18082249. The next prime is 18082303. The reversal of 18082272 is 27228081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 5997 + ... + 8492.

It is an arithmetic number, because the mean of its divisors is an integer number (1065015).

Almost surely, 2^18082272 is an apocalyptic number.

18082272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18082272 is an abundant number, since it is smaller than the sum of its proper divisors (33038448).

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

18082272 is a wasteful number, since it uses less digits than its factorization.

18082272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14515 (or 14507 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 18082272 is about 4252.3254814278. The cubic root of 18082272 is about 262.4728171399.

The spelling of 18082272 in words is "eighteen million, eighty-two thousand, two hundred seventy-two".