28000597 has 2 divisors, whose sum is σ = 28000598. Its totient is φ = 28000596.

The previous prime is 28000571. The next prime is 28000603. The reversal of 28000597 is 79500082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27783441 + 217156 = 5271^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 28000597 - 2²³ = 19611989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28000507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000298 + 14000299.

It is an arithmetic number, because the mean of its divisors is an integer number (14000299).

Almost surely, 2^28000597 is an apocalyptic number.

It is an amenable number.

28000597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28000597 is an equidigital number, since it uses as much as digits as its factorization.

28000597 is an evil number, because the sum of its binary digits is even.

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

The square root of 28000597 is about 5291.5590330261. The cubic root of 28000597 is about 303.6610553194.

The spelling of 28000597 in words is "twenty-eight million, five hundred ninety-seven", and thus it is an aban number.