28085259 has 8 divisors (see below), whose sum is σ = 37686160. Its totient is φ = 18603936.

The previous prime is 28085251. The next prime is 28085263. The reversal of 28085259 is 95258082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28085259 - 2³ = 28085251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28085251) 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 in 7 ways as a sum of consecutive naturals, for example, 29344 + ... + 30285.

It is an arithmetic number, because the mean of its divisors is an integer number (4710770).

Almost surely, 2^28085259 is an apocalyptic number.

28085259 is a deficient number, since it is larger than the sum of its proper divisors (9600901).

28085259 is a wasteful number, since it uses less digits than its factorization.

28085259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59789.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28085259 is about 5299.5527169753. The cubic root of 28085259 is about 303.9667950517.

The spelling of 28085259 in words is "twenty-eight million, eighty-five thousand, two hundred fifty-nine".