18244256 has 48 divisors (see below), whose sum is σ = 38878560. Its totient is φ = 8398080.

The previous prime is 18244253. The next prime is 18244279. The reversal of 18244256 is 65244281.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (18244253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22091 + ... + 22901.

It is an arithmetic number, because the mean of its divisors is an integer number (809970).

Almost surely, 2^18244256 is an apocalyptic number.

18244256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18244256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19439280).

18244256 is an abundant number, since it is smaller than the sum of its proper divisors (20634304).

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

18244256 is a wasteful number, since it uses less digits than its factorization.

18244256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 869 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 18244256 is about 4271.3295354023. The cubic root of 18244256 is about 263.2542467555.

The spelling of 18244256 in words is "eighteen million, two hundred forty-four thousand, two hundred fifty-six".