22044164 has 6 divisors (see below), whose sum is σ = 38577294. Its totient is φ = 11022080.

The previous prime is 22044157. The next prime is 22044203. The reversal of 22044164 is 46144022.

It can be written as a sum of positive squares in only one way, i.e., 19009600 + 3034564 = 4360^2 + 1742^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755517 + ... + 2755524.

It is an arithmetic number, because the mean of its divisors is an integer number (6429549).

Almost surely, 2^22044164 is an apocalyptic number.

It is an amenable number.

22044164 is a deficient number, since it is larger than the sum of its proper divisors (16533130).

22044164 is a wasteful number, since it uses less digits than its factorization.

22044164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511045 (or 5511043 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 22044164 is about 4695.1212976876. The cubic root of 22044164 is about 280.3913066265.

Adding to 22044164 its reverse (46144022), we get a palindrome (68188186).

The spelling of 22044164 in words is "twenty-two million, forty-four thousand, one hundred sixty-four".