22628897 has 2 divisors, whose sum is σ = 22628898. Its totient is φ = 22628896.

The previous prime is 22628863. The next prime is 22628917. The reversal of 22628897 is 79882622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 341056 = 4721^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 22628897 - 2⁶ = 22628833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22628807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11314448 + 11314449.

It is an arithmetic number, because the mean of its divisors is an integer number (11314449).

Almost surely, 2^22628897 is an apocalyptic number.

It is an amenable number.

22628897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22628897 is an equidigital number, since it uses as much as digits as its factorization.

22628897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 22628897 is about 4756.9840235174. The cubic root of 22628897 is about 282.8488790153.

The spelling of 22628897 in words is "twenty-two million, six hundred twenty-eight thousand, eight hundred ninety-seven".