22563036 has 72 divisors (see below), whose sum is σ = 59928960. Its totient is φ = 7422192.

The previous prime is 22563017. The next prime is 22563043. The reversal of 22563036 is 63036522.

22563036 is a `hidden beast` number, since 2 + 25 + 630 + 3 + 6 = 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135025 + ... + 135191.

Almost surely, 2^22563036 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 22563036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29964480).

22563036 is an abundant number, since it is smaller than the sum of its proper divisors (37365924).

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

22563036 is a wasteful number, since it uses less digits than its factorization.

22563036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 22563036 is about 4750.0564207175. The cubic root of 22563036 is about 282.5742034954.

Adding to 22563036 its reverse (63036522), we get a palindrome (85599558).

The spelling of 22563036 in words is "twenty-two million, five hundred sixty-three thousand, thirty-six".