28605259 has 2 divisors, whose sum is σ = 28605260. Its totient is φ = 28605258.

The previous prime is 28605257. The next prime is 28605293. The reversal of 28605259 is 95250682.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28605259 - 2¹ = 28605257 is a prime.

Together with 28605257, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28605251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302629 + 14302630.

It is an arithmetic number, because the mean of its divisors is an integer number (14302630).

Almost surely, 2^28605259 is an apocalyptic number.

28605259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605259 is an equidigital number, since it uses as much as digits as its factorization.

28605259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 28605259 is about 5348.3884488694. The cubic root of 28605259 is about 305.8313215910.

The spelling of 28605259 in words is "twenty-eight million, six hundred five thousand, two hundred fifty-nine".