28635085 has 4 divisors (see below), whose sum is σ = 34362108. Its totient is φ = 22908064.

The previous prime is 28635067. The next prime is 28635091. The reversal of 28635085 is 58053682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58053682 = 2 ⋅29026841.

It can be written as a sum of positive squares in 2 ways, for example, as 16621929 + 12013156 = 4077^2 + 3466^2 .

It is a cyclic number.

It is not a de Polignac number, because 28635085 - 2¹¹ = 28633037 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 2863504 + ... + 2863513.

It is an arithmetic number, because the mean of its divisors is an integer number (8590527).

Almost surely, 2^28635085 is an apocalyptic number.

It is an amenable number.

28635085 is a deficient number, since it is larger than the sum of its proper divisors (5727023).

28635085 is an equidigital number, since it uses as much as digits as its factorization.

28635085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727022.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28635085 is about 5351.1760389656. The cubic root of 28635085 is about 305.9375789346.

The spelling of 28635085 in words is "twenty-eight million, six hundred thirty-five thousand, eighty-five".