22143224 has 16 divisors (see below), whose sum is σ = 41775720. Its totient is φ = 11003040.

The previous prime is 22143223. The next prime is 22143229. The reversal of 22143224 is 42234122.

It is a super-2 number, since 2×22143224² = 980644738228352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22143196 and 22143205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143223) 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, 7187 + ... + 9794.

Almost surely, 2^22143224 is an apocalyptic number.

It is an amenable number.

22143224 is a deficient number, since it is larger than the sum of its proper divisors (19632496).

22143224 is a wasteful number, since it uses less digits than its factorization.

22143224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17150 (or 17146 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 22143224 is about 4705.6587211569. The cubic root of 22143224 is about 280.8106778081.

Adding to 22143224 its reverse (42234122), we get a palindrome (64377346).

The spelling of 22143224 in words is "twenty-two million, one hundred forty-three thousand, two hundred twenty-four".