28859 has 2 divisors, whose sum is σ = 28860. Its totient is φ = 28858.

The previous prime is 28843. The next prime is 28867. The reversal of 28859 is 95882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28859 - 2⁴ = 28843 is a prime.

It is a Sophie Germain prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28859.

It is not a weakly prime, because it can be changed into another prime (28879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429 + 14430.

It is an arithmetic number, because the mean of its divisors is an integer number (14430).

2²⁸⁸⁵⁹ is an apocalyptic number.

28859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28859 is an equidigital number, since it uses as much as digits as its factorization.

28859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 28859 is about 169.8793689652. The cubic root of 28859 is about 30.6732946187.

The spelling of 28859 in words is "twenty-eight thousand, eight hundred fifty-nine".