22504564 has 6 divisors (see below), whose sum is σ = 39382994. Its totient is φ = 11252280.

The previous prime is 22504541. The next prime is 22504577. The reversal of 22504564 is 46540522.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 9972964 = 3540^2 + 3158^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813067 + ... + 2813074.

Almost surely, 2^22504564 is an apocalyptic number.

It is an amenable number.

22504564 is a deficient number, since it is larger than the sum of its proper divisors (16878430).

22504564 is a wasteful number, since it uses less digits than its factorization.

22504564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626145 (or 5626143 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22504564 is about 4743.8975536999. The cubic root of 22504564 is about 282.3298957668.

The spelling of 22504564 in words is "twenty-two million, five hundred four thousand, five hundred sixty-four".