22512224 has 24 divisors (see below), whose sum is σ = 50653008. Its totient is φ = 9648000.

The previous prime is 22512211. The next prime is 22512229. The reversal of 22512224 is 42221522.

It is a junction number, because it is equal to n+sod(n) for n = 22512196 and 22512205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512229) 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, 50027 + ... + 50474.

It is an arithmetic number, because the mean of its divisors is an integer number (2110542).

Almost surely, 2^22512224 is an apocalyptic number.

It is an amenable number.

22512224 is an abundant number, since it is smaller than the sum of its proper divisors (28140784).

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

22512224 is a wasteful number, since it uses less digits than its factorization.

22512224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100518 (or 100510 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 22512224 is about 4744.7048380273. The cubic root of 22512224 is about 282.3619248503.

Adding to 22512224 its reverse (42221522), we get a palindrome (64733746).

The spelling of 22512224 in words is "twenty-two million, five hundred twelve thousand, two hundred twenty-four".