28097 has 2 divisors, whose sum is σ = 28098. Its totient is φ = 28096.

The previous prime is 28087. The next prime is 28099. The reversal of 28097 is 79082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14641 + 13456 = 121^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 28097 - 2⁴ = 28081 is a prime.

Together with 28099, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28097.

It is not a weakly prime, because it can be changed into another prime (28099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14048 + 14049.

It is an arithmetic number, because the mean of its divisors is an integer number (14049).

2²⁸⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

28097 is a deficient number, since it is larger than the sum of its proper divisors (1).

28097 is an equidigital number, since it uses as much as digits as its factorization.

28097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 28097 is about 167.6215976538. The cubic root of 28097 is about 30.4009146770.

The spelling of 28097 in words is "twenty-eight thousand, ninety-seven".