22490207 has 2 divisors, whose sum is σ = 22490208. Its totient is φ = 22490206.

The previous prime is 22490203. The next prime is 22490213. The reversal of 22490207 is 70209422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22490207 - 2² = 22490203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22490203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11245103 + 11245104.

It is an arithmetic number, because the mean of its divisors is an integer number (11245104).

Almost surely, 2^22490207 is an apocalyptic number.

22490207 is a deficient number, since it is larger than the sum of its proper divisors (1).

22490207 is an equidigital number, since it uses as much as digits as its factorization.

22490207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22490207 is about 4742.3841050678. The cubic root of 22490207 is about 282.2698446503.

Adding to 22490207 its reverse (70209422), we get a palindrome (92699629).

The spelling of 22490207 in words is "twenty-two million, four hundred ninety thousand, two hundred seven".