22560256 has 40 divisors (see below), whose sum is σ = 45543960. Its totient is φ = 11163648.

The previous prime is 22560247. The next prime is 22560271. The reversal of 22560256 is 65206522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71010 + ... + 71326.

It is an arithmetic number, because the mean of its divisors is an integer number (1138599).

Almost surely, 2^22560256 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 22560256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22771980).

22560256 is an abundant number, since it is smaller than the sum of its proper divisors (22983704).

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

22560256 is an equidigital number, since it uses as much as digits as its factorization.

22560256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 22560256 is about 4749.7637836002. The cubic root of 22560256 is about 282.5625976614.

Adding to 22560256 its reverse (65206522), we get a palindrome (87766778).

The spelling of 22560256 in words is "twenty-two million, five hundred sixty thousand, two hundred fifty-six".