28597 has 2 divisors, whose sum is σ = 28598. Its totient is φ = 28596.

The previous prime is 28591. The next prime is 28603. The reversal of 28597 is 79582.

It is a balanced prime because it is at equal distance from previous prime (28591) and next prime (28603).

It can be written as a sum of positive squares in only one way, i.e., 28561 + 36 = 169^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28591) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14298 + 14299.

It is an arithmetic number, because the mean of its divisors is an integer number (14299).

2²⁸⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

28597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28597 is an equidigital number, since it uses as much as digits as its factorization.

28597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 28597 is about 169.1064753343. The cubic root of 28597 is about 30.5801885232.

It can be divided in two parts, 28 and 597, that added together give a 4-th power (625 = 5⁴).

The spelling of 28597 in words is "twenty-eight thousand, five hundred ninety-seven".