22005164 has 24 divisors (see below), whose sum is σ = 40685568. Its totient is φ = 10397520.

The previous prime is 22005149. The next prime is 22005167. The reversal of 22005164 is 46150022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22005167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3269 + ... + 7395.

It is an arithmetic number, because the mean of its divisors is an integer number (1695232).

Almost surely, 2^22005164 is an apocalyptic number.

It is an amenable number.

22005164 is a deficient number, since it is larger than the sum of its proper divisors (18680404).

22005164 is a wasteful number, since it uses less digits than its factorization.

22005164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4203 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22005164 is about 4690.9662117734. The cubic root of 22005164 is about 280.2258551854.

Adding to 22005164 its reverse (46150022), we get a palindrome (68155186).

The spelling of 22005164 in words is "twenty-two million, five thousand, one hundred sixty-four".