22142164 has 12 divisors (see below), whose sum is σ = 42271488. Its totient is φ = 10064600.

The previous prime is 22142161. The next prime is 22142171. The reversal of 22142164 is 46124122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142161) 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, 251572 + ... + 251659.

It is an arithmetic number, because the mean of its divisors is an integer number (3522624).

Almost surely, 2^22142164 is an apocalyptic number.

It is an amenable number.

22142164 is a deficient number, since it is larger than the sum of its proper divisors (20129324).

22142164 is a wasteful number, since it uses less digits than its factorization.

22142164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503246 (or 503244 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 22142164 is about 4705.5460894566. The cubic root of 22142164 is about 280.8061969179.

Adding to 22142164 its reverse (46124122), we get a palindrome (68266286).

The spelling of 22142164 in words is "twenty-two million, one hundred forty-two thousand, one hundred sixty-four".