28608259 has 2 divisors, whose sum is σ = 28608260. Its totient is φ = 28608258.

The previous prime is 28608253. The next prime is 28608311. The reversal of 28608259 is 95280682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28608259 - 2⁷ = 28608131 is a prime.

It is a super-2 number, since 2×28608259² = 1636864966022162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28608253) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14304129 + 14304130.

It is an arithmetic number, because the mean of its divisors is an integer number (14304130).

Almost surely, 2^28608259 is an apocalyptic number.

28608259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28608259 is an equidigital number, since it uses as much as digits as its factorization.

28608259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28608259 is about 5348.6688998292. The cubic root of 28608259 is about 305.8420126542.

The spelling of 28608259 in words is "twenty-eight million, six hundred eight thousand, two hundred fifty-nine".