22224305 has 4 divisors (see below), whose sum is σ = 26669172. Its totient is φ = 17779440.

The previous prime is 22224283. The next prime is 22224311. The reversal of 22224305 is 50342222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15547249 + 6677056 = 3943^2 + 2584^2 .

It is not a de Polignac number, because 22224305 - 2¹⁰ = 22223281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2222426 + ... + 2222435.

It is an arithmetic number, because the mean of its divisors is an integer number (6667293).

Almost surely, 2^22224305 is an apocalyptic number.

It is an amenable number.

22224305 is a deficient number, since it is larger than the sum of its proper divisors (4444867).

22224305 is an equidigital number, since it uses as much as digits as its factorization.

22224305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444866.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22224305 is about 4714.2661146779. The cubic root of 22224305 is about 281.1530049069.

Adding to 22224305 its reverse (50342222), we get a palindrome (72566527).

The spelling of 22224305 in words is "twenty-two million, two hundred twenty-four thousand, three hundred five".