22812224 has 14 divisors (see below), whose sum is σ = 45268134. Its totient is φ = 11406080.

The previous prime is 22812221. The next prime is 22812233. The reversal of 22812224 is 42221822.

It can be written as a sum of positive squares in only one way, i.e., 22733824 + 78400 = 4768^2 + 280^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22812224.

It is not an unprimeable number, because it can be changed into a prime (22812221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178157 + ... + 178284.

Almost surely, 2^22812224 is an apocalyptic number.

It is an amenable number.

22812224 is a deficient number, since it is larger than the sum of its proper divisors (22455910).

22812224 is an equidigital number, since it uses as much as digits as its factorization.

22812224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356453 (or 356443 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 22812224 is about 4776.2144005478. The cubic root of 22812224 is about 283.6106547335.

The spelling of 22812224 in words is "twenty-two million, eight hundred twelve thousand, two hundred twenty-four".