28822589 has 2 divisors, whose sum is σ = 28822590. Its totient is φ = 28822588.

The previous prime is 28822583. The next prime is 28822603. The reversal of 28822589 is 98522882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 12355225 = 4058^2 + 3515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28822589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28822583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14411294 + 14411295.

It is an arithmetic number, because the mean of its divisors is an integer number (14411295).

Almost surely, 2^28822589 is an apocalyptic number.

It is an amenable number.

28822589 is a deficient number, since it is larger than the sum of its proper divisors (1).

28822589 is an equidigital number, since it uses as much as digits as its factorization.

28822589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 44.

The square root of 28822589 is about 5368.6673392938. The cubic root of 28822589 is about 306.6038916614.

The spelling of 28822589 in words is "twenty-eight million, eight hundred twenty-two thousand, five hundred eighty-nine".