22828991 has 2 divisors, whose sum is σ = 22828992. Its totient is φ = 22828990.

The previous prime is 22828979. The next prime is 22828997. The reversal of 22828991 is 19982822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22828991 - 2¹⁰ = 22827967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22828997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11414495 + 11414496.

It is an arithmetic number, because the mean of its divisors is an integer number (11414496).

Almost surely, 2^22828991 is an apocalyptic number.

22828991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22828991 is an equidigital number, since it uses as much as digits as its factorization.

22828991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 22828991 is about 4777.9693385370. The cubic root of 22828991 is about 283.6801223908.

The spelling of 22828991 in words is "twenty-two million, eight hundred twenty-eight thousand, nine hundred ninety-one".