22231164 has 12 divisors (see below), whose sum is σ = 51872744. Its totient is φ = 7410384.

The previous prime is 22231151. The next prime is 22231169. The reversal of 22231164 is 46113222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22231164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231169) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 926287 + ... + 926310.

Almost surely, 2^22231164 is an apocalyptic number.

It is an amenable number.

22231164 is an abundant number, since it is smaller than the sum of its proper divisors (29641580).

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

22231164 is a wasteful number, since it uses less digits than its factorization.

22231164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852604 (or 1852602 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 22231164 is about 4714.9935312787. The cubic root of 22231164 is about 281.1819256479.

Adding to 22231164 its reverse (46113222), we get a palindrome (68344386).

The spelling of 22231164 in words is "twenty-two million, two hundred thirty-one thousand, one hundred sixty-four".