22445224 has 8 divisors (see below), whose sum is σ = 42084810. Its totient is φ = 11222608.

The previous prime is 22445221. The next prime is 22445231. The reversal of 22445224 is 42254422.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 10125124 = 3510^2 + 3182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (22445221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402819 + ... + 1402834.

Almost surely, 2^22445224 is an apocalyptic number.

It is an amenable number.

22445224 is a deficient number, since it is larger than the sum of its proper divisors (19639586).

22445224 is a wasteful number, since it uses less digits than its factorization.

22445224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805659 (or 2805655 counting only the distinct ones).

The product of its digits is 5120, while the sum is 25.

The square root of 22445224 is about 4737.6390744758. The cubic root of 22445224 is about 282.0815283277.

Adding to 22445224 its reverse (42254422), we get a palindrome (64699646).

The spelling of 22445224 in words is "twenty-two million, four hundred forty-five thousand, two hundred twenty-four".