28502597 has 2 divisors, whose sum is σ = 28502598. Its totient is φ = 28502596.

The previous prime is 28502581. The next prime is 28502599. The reversal of 28502597 is 79520582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27520516 + 982081 = 5246^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 28502597 - 2⁴ = 28502581 is a prime.

Together with 28502599, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28502597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28502599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14251298 + 14251299.

It is an arithmetic number, because the mean of its divisors is an integer number (14251299).

Almost surely, 2^28502597 is an apocalyptic number.

It is an amenable number.

28502597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28502597 is an equidigital number, since it uses as much as digits as its factorization.

28502597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 28502597 is about 5338.7823518102. The cubic root of 28502597 is about 305.4650149274.

The spelling of 28502597 in words is "twenty-eight million, five hundred two thousand, five hundred ninety-seven".