22312164 has 24 divisors (see below), whose sum is σ = 59499328. Its totient is φ = 6374880.

The previous prime is 22312163. The next prime is 22312181. The reversal of 22312164 is 46121322.

It is a super-3 number, since 3×22312164³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 22312164.

It is not an unprimeable number, because it can be changed into a prime (22312163) 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, 132727 + ... + 132894.

Almost surely, 2^22312164 is an apocalyptic number.

It is an amenable number.

22312164 is an abundant number, since it is smaller than the sum of its proper divisors (37187164).

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

22312164 is a wasteful number, since it uses less digits than its factorization.

22312164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265635 (or 265633 counting only the distinct ones).

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

The square root of 22312164 is about 4723.5753407774. The cubic root of 22312164 is about 281.5230103589.

Adding to 22312164 its reverse (46121322), we get a palindrome (68433486).

The spelling of 22312164 in words is "twenty-two million, three hundred twelve thousand, one hundred sixty-four".