22512244 has 6 divisors (see below), whose sum is σ = 39396434. Its totient is φ = 11256120.

The previous prime is 22512229. The next prime is 22512247. The reversal of 22512244 is 44221522.

It can be written as a sum of positive squares in only one way, i.e., 17539344 + 4972900 = 4188^2 + 2230^2 .

It is a super-2 number, since 2×22512244² = 1013602259831072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814027 + ... + 2814034.

Almost surely, 2^22512244 is an apocalyptic number.

It is an amenable number.

22512244 is a deficient number, since it is larger than the sum of its proper divisors (16884190).

22512244 is a wasteful number, since it uses less digits than its factorization.

22512244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628065 (or 5628063 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22512244 is about 4744.7069456395. The cubic root of 22512244 is about 282.3620084677.

Adding to 22512244 its reverse (44221522), we get a palindrome (66733766).

The spelling of 22512244 in words is "twenty-two million, five hundred twelve thousand, two hundred forty-four".