28896089 has 2 divisors, whose sum is σ = 28896090. Its totient is φ = 28896088.

The previous prime is 28896083. The next prime is 28896121. The reversal of 28896089 is 98069882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 11323225 = 4192^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 28896089 - 2⁸ = 28895833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28896083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14448044 + 14448045.

It is an arithmetic number, because the mean of its divisors is an integer number (14448045).

Almost surely, 2^28896089 is an apocalyptic number.

It is an amenable number.

28896089 is a deficient number, since it is larger than the sum of its proper divisors (1).

28896089 is an equidigital number, since it uses as much as digits as its factorization.

28896089 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 28896089 is about 5375.5082550397. The cubic root of 28896089 is about 306.8642922500.

The spelling of 28896089 in words is "twenty-eight million, eight hundred ninety-six thousand, eighty-nine".