22153244 has 12 divisors (see below), whose sum is σ = 41048784. Its totient is φ = 10425024.

The previous prime is 22153223. The next prime is 22153247. The reversal of 22153244 is 44235122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162824 + ... + 162959.

It is an arithmetic number, because the mean of its divisors is an integer number (3420732).

Almost surely, 2^22153244 is an apocalyptic number.

It is an amenable number.

22153244 is a deficient number, since it is larger than the sum of its proper divisors (18895540).

22153244 is a wasteful number, since it uses less digits than its factorization.

22153244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325804 (or 325802 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 22153244 is about 4706.7232763357. The cubic root of 22153244 is about 280.8530278394.

Adding to 22153244 its reverse (44235122), we get a palindrome (66388366).

The spelling of 22153244 in words is "twenty-two million, one hundred fifty-three thousand, two hundred forty-four".