22304173 has 2 divisors, whose sum is σ = 22304174. Its totient is φ = 22304172.

The previous prime is 22304171. The next prime is 22304189. The reversal of 22304173 is 37140322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22297284 + 6889 = 4722^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 22304173 - 2¹ = 22304171 is a prime.

It is a super-2 number, since 2×22304173² = 994952266427858, which contains 22 as substring.

Together with 22304171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22304171) 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, 11152086 + 11152087.

It is an arithmetic number, because the mean of its divisors is an integer number (11152087).

Almost surely, 2^22304173 is an apocalyptic number.

It is an amenable number.

22304173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22304173 is an equidigital number, since it uses as much as digits as its factorization.

22304173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 22304173 is about 4722.7294015220. The cubic root of 22304173 is about 281.4893976175.

Adding to 22304173 its reverse (37140322), we get a palindrome (59444495).

The spelling of 22304173 in words is "twenty-two million, three hundred four thousand, one hundred seventy-three".