22182689 has 2 divisors, whose sum is σ = 22182690. Its totient is φ = 22182688.

The previous prime is 22182661. The next prime is 22182703. The reversal of 22182689 is 98628122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 10349089 = 3440^2 + 3217^2 .

It is a cyclic number.

It is not a de Polignac number, because 22182689 - 2¹² = 22178593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22182089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11091344 + 11091345.

It is an arithmetic number, because the mean of its divisors is an integer number (11091345).

Almost surely, 2^22182689 is an apocalyptic number.

It is an amenable number.

22182689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22182689 is an equidigital number, since it uses as much as digits as its factorization.

22182689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 22182689 is about 4709.8502099324. The cubic root of 22182689 is about 280.9774047510.

The spelling of 22182689 in words is "twenty-two million, one hundred eighty-two thousand, six hundred eighty-nine".