22144264 has 32 divisors (see below), whose sum is σ = 42882840. Its totient is φ = 10713600.

The previous prime is 22144259. The next prime is 22144267. The reversal of 22144264 is 46244122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6604900 + 15539364 = 2570^2 + 3942^2 .

It is not an unprimeable number, because it can be changed into a prime (22144267) 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, 59182 + ... + 59554.

Almost surely, 2^22144264 is an apocalyptic number.

It is an amenable number.

22144264 is a deficient number, since it is larger than the sum of its proper divisors (20738576).

22144264 is a wasteful number, since it uses less digits than its factorization.

22144264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 597 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 22144264 is about 4705.7692251108. The cubic root of 22144264 is about 280.8150740143.

Adding to 22144264 its reverse (46244122), we get a palindrome (68388386).

The spelling of 22144264 in words is "twenty-two million, one hundred forty-four thousand, two hundred sixty-four".