18027144 has 32 divisors (see below), whose sum is σ = 50076000. Its totient is φ = 6008976.

The previous prime is 18027059. The next prime is 18027169. The reversal of 18027144 is 44172081.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 41514 + ... + 41945.

It is an arithmetic number, because the mean of its divisors is an integer number (1564875).

Almost surely, 2^18027144 is an apocalyptic number.

It is an amenable number.

18027144 is an abundant number, since it is smaller than the sum of its proper divisors (32048856).

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

18027144 is a wasteful number, since it uses less digits than its factorization.

18027144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83474 (or 83464 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 18027144 is about 4245.8384331013. The cubic root of 18027144 is about 262.2058091911.

The spelling of 18027144 in words is "eighteen million, twenty-seven thousand, one hundred forty-four".