28589 has 8 divisors (see below), whose sum is σ = 32832. Its totient is φ = 24640.

The previous prime is 28579. The next prime is 28591. The reversal of 28589 is 98582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28589 - 2⁴ = 28573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197 + ... + 309.

It is an arithmetic number, because the mean of its divisors is an integer number (4104).

2²⁸⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

28589 is a deficient number, since it is larger than the sum of its proper divisors (4243).

28589 is a wasteful number, since it uses less digits than its factorization.

28589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147.

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

The square root of 28589 is about 169.0828199434. The cubic root of 28589 is about 30.5773366585.

The spelling of 28589 in words is "twenty-eight thousand, five hundred eighty-nine".