22564530 has 48 divisors (see below), whose sum is σ = 58907160. Its totient is φ = 5992704.

The previous prime is 22564513. The next prime is 22564537. The reversal of 22564530 is 3546522.

It can be written as a sum of positive squares in 4 ways, for example, as 15705369 + 6859161 = 3963^2 + 2619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22564494 and 22564503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22564537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36504 + ... + 37116.

Almost surely, 2^22564530 is an apocalyptic number.

22564530 is an abundant number, since it is smaller than the sum of its proper divisors (36342630).

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

22564530 is a wasteful number, since it uses less digits than its factorization.

22564530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 22564530 is about 4750.2136794043. The cubic root of 22564530 is about 282.5804401937.

It can be divided in two parts, 2256 and 4530, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 22564530 in words is "twenty-two million, five hundred sixty-four thousand, five hundred thirty".