28245085 has 16 divisors (see below), whose sum is σ = 37222272. Its totient is φ = 20404800.

The previous prime is 28245079. The next prime is 28245157. The reversal of 28245085 is 58054282.

It is not a de Polignac number, because 28245085 - 2⁵ = 28245053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28245085.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7000 + ... + 10270.

It is an arithmetic number, because the mean of its divisors is an integer number (2326392).

Almost surely, 2^28245085 is an apocalyptic number.

It is an amenable number.

28245085 is a deficient number, since it is larger than the sum of its proper divisors (8977187).

28245085 is a wasteful number, since it uses less digits than its factorization.

28245085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 28245085 is about 5314.6105219480. The cubic root of 28245085 is about 304.5423037403.

The spelling of 28245085 in words is "twenty-eight million, two hundred forty-five thousand, eighty-five".