22170564 has 48 divisors (see below), whose sum is σ = 61904640. Its totient is φ = 6821280.

The previous prime is 22170563. The next prime is 22170569. The reversal of 22170564 is 46507122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22170563) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6492 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (1289680).

Almost surely, 2^22170564 is an apocalyptic number.

It is an amenable number.

22170564 is an abundant number, since it is smaller than the sum of its proper divisors (39734076).

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

22170564 is a wasteful number, since it uses less digits than its factorization.

22170564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15817 (or 15809 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22170564 is about 4708.5628380643. The cubic root of 22170564 is about 280.9262015816.

Adding to 22170564 its reverse (46507122), we get a palindrome (68677686).

The spelling of 22170564 in words is "twenty-two million, one hundred seventy thousand, five hundred sixty-four".