22536256 has 56 divisors (see below), whose sum is σ = 47565056. Its totient is φ = 10575360.

The previous prime is 22536193. The next prime is 22536259. The reversal of 22536256 is 65263522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (22536259) 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, 73255 + ... + 73561.

It is an arithmetic number, because the mean of its divisors is an integer number (849376).

Almost surely, 2^22536256 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 22536256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23782528).

22536256 is an abundant number, since it is smaller than the sum of its proper divisors (25028800).

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

22536256 is a wasteful number, since it uses less digits than its factorization.

22536256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 377 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 22536256 is about 4747.2366698954. The cubic root of 22536256 is about 282.4623637438.

Adding to 22536256 its reverse (65263522), we get a palindrome (87799778).

It can be divided in two parts, 225 and 36256, that added together give a square (36481 = 191²).

The spelling of 22536256 in words is "twenty-two million, five hundred thirty-six thousand, two hundred fifty-six".