28096889 has 2 divisors, whose sum is σ = 28096890. Its totient is φ = 28096888.

The previous prime is 28096843. The next prime is 28096891. The reversal of 28096889 is 98869082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 6889 = 5300^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 28096889 - 2²⁰ = 27048313 is a prime.

It is a Sophie Germain prime.

Together with 28096891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28096489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14048444 + 14048445.

It is an arithmetic number, because the mean of its divisors is an integer number (14048445).

Almost surely, 2^28096889 is an apocalyptic number.

It is an amenable number.

28096889 is a deficient number, since it is larger than the sum of its proper divisors (1).

28096889 is an equidigital number, since it uses as much as digits as its factorization.

28096889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 28096889 is about 5300.6498658183. The cubic root of 28096889 is about 304.0087464300.

It can be divided in two parts, 2809 and 6889, that multiplied together give a square (19351201 = 4399²).

The spelling of 28096889 in words is "twenty-eight million, ninety-six thousand, eight hundred eighty-nine".