18089056 has 12 divisors (see below), whose sum is σ = 35612892. Its totient is φ = 9044512.

The previous prime is 18089039. The next prime is 18089081. The reversal of 18089056 is 65098081.

It is a super-2 number, since 2×18089056² = 654427893942272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282610 + ... + 282673.

It is an arithmetic number, because the mean of its divisors is an integer number (2967741).

Almost surely, 2^18089056 is an apocalyptic number.

18089056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18089056 is a deficient number, since it is larger than the sum of its proper divisors (17523836).

18089056 is an equidigital number, since it uses as much as digits as its factorization.

18089056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565293 (or 565285 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 18089056 is about 4253.1230878027. The cubic root of 18089056 is about 262.5056373695.

The spelling of 18089056 in words is "eighteen million, eighty-nine thousand, fifty-six".