22153272 has 16 divisors (see below), whose sum is σ = 55383240. Its totient is φ = 7384416.

The previous prime is 22153267. The next prime is 22153273. The reversal of 22153272 is 27235122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 923053 = 22153272 / (2 + 2 + 1 + 5 + 3 + 2 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153273) 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, 461503 + ... + 461550.

Almost surely, 2^22153272 is an apocalyptic number.

It is an amenable number.

22153272 is an abundant number, since it is smaller than the sum of its proper divisors (33229968).

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

22153272 is a wasteful number, since it uses less digits than its factorization.

22153272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923062 (or 923058 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 22153272 is about 4706.7262508032. The cubic root of 22153272 is about 280.8531461649.

Adding to 22153272 its reverse (27235122), we get a palindrome (49388394).

The spelling of 22153272 in words is "twenty-two million, one hundred fifty-three thousand, two hundred seventy-two".