18027936 has 36 divisors (see below), whose sum is σ = 51267762. Its totient is φ = 6009216.

The previous prime is 18027899. The next prime is 18027943. The reversal of 18027936 is 63972081.

It can be written as a sum of positive squares in only one way, i.e., 14107536 + 3920400 = 3756^2 + 1980^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18027936.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31011 + ... + 31586.

Almost surely, 2^18027936 is an apocalyptic number.

18027936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18027936 is an abundant number, since it is smaller than the sum of its proper divisors (33239826).

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

18027936 is a wasteful number, since it uses less digits than its factorization.

18027936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62613 (or 62602 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 18027936 is about 4245.9316998746. The cubic root of 18027936 is about 262.2096490295.

The spelling of 18027936 in words is "eighteen million, twenty-seven thousand, nine hundred thirty-six".