22641272 has 16 divisors (see below), whose sum is σ = 42519600. Its totient is φ = 11302720.

The previous prime is 22641259. The next prime is 22641277. The reversal of 22641272 is 27214622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22641277) 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, 4229 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (2657475).

Almost surely, 2^22641272 is an apocalyptic number.

It is an amenable number.

22641272 is a deficient number, since it is larger than the sum of its proper divisors (19878328).

22641272 is a wasteful number, since it uses less digits than its factorization.

22641272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4482 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 22641272 is about 4758.2845648406. The cubic root of 22641272 is about 282.9004298710.

Adding to 22641272 its reverse (27214622), we get a palindrome (49855894).

It can be divided in two parts, 2264127 and 2, that multiplied together give a palindrome (4528254).

The spelling of 22641272 in words is "twenty-two million, six hundred forty-one thousand, two hundred seventy-two".