18056844 has 72 divisors (see below), whose sum is σ = 51010960. Its totient is φ = 5552064.

The previous prime is 18056833. The next prime is 18056867. The reversal of 18056844 is 44865081.

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

It is a junction number, because it is equal to n+sod(n) for n = 18056799 and 18056808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11922 + ... + 13350.

Almost surely, 2^18056844 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 18056844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25505480).

18056844 is an abundant number, since it is smaller than the sum of its proper divisors (32954116).

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

18056844 is a wasteful number, since it uses less digits than its factorization.

18056844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 18056844 is about 4249.3345361362. The cubic root of 18056844 is about 262.3497262339.

It can be divided in two parts, 1805 and 6844, that added together give a square (8649 = 93²).

The spelling of 18056844 in words is "eighteen million, fifty-six thousand, eight hundred forty-four".