28396259 has 2 divisors, whose sum is σ = 28396260. Its totient is φ = 28396258.

The previous prime is 28396213. The next prime is 28396267. The reversal of 28396259 is 95269382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28396259 - 2¹² = 28392163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28396289) 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, 14198129 + 14198130.

It is an arithmetic number, because the mean of its divisors is an integer number (14198130).

Almost surely, 2^28396259 is an apocalyptic number.

28396259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28396259 is an equidigital number, since it uses as much as digits as its factorization.

28396259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 28396259 is about 5328.8140331597. The cubic root of 28396259 is about 305.0846634087.

The spelling of 28396259 in words is "twenty-eight million, three hundred ninety-six thousand, two hundred fifty-nine".