18054144 has 88 divisors (see below), whose sum is σ = 53549520. Its totient is φ = 6008832.

The previous prime is 18054137. The next prime is 18054163. The reversal of 18054144 is 44145081.

It is a happy number.

18054144 is a `hidden beast` number, since 1 + 80 + 541 + 44 = 666.

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

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, 27322 + ... + 27974.

Almost surely, 2^18054144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18054144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26774760).

18054144 is an abundant number, since it is smaller than the sum of its proper divisors (35495376).

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

18054144 is an equidigital number, since it uses as much as digits as its factorization.

18054144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 18054144 is about 4249.0168274555. The cubic root of 18054144 is about 262.3366493904.

The spelling of 18054144 in words is "eighteen million, fifty-four thousand, one hundred forty-four".