22564004 has 12 divisors (see below), whose sum is σ = 39871104. Its totient is φ = 11172264.

The previous prime is 22563997. The next prime is 22564007. The reversal of 22564004 is 40046522.

It is not an unprimeable number, because it can be changed into a prime (22564007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26972 + ... + 27795.

It is an arithmetic number, because the mean of its divisors is an integer number (3322592).

Almost surely, 2^22564004 is an apocalyptic number.

It is an amenable number.

22564004 is a deficient number, since it is larger than the sum of its proper divisors (17307100).

22564004 is a wasteful number, since it uses less digits than its factorization.

22564004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54874 (or 54872 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22564004 is about 4750.1583131513. The cubic root of 22564004 is about 282.5782444398.

The spelling of 22564004 in words is "twenty-two million, five hundred sixty-four thousand, four".