28336285 has 8 divisors (see below), whose sum is σ = 34080696. Its totient is φ = 22617600.

The previous prime is 28336271. The next prime is 28336303. The reversal of 28336285 is 58263382.

It can be written as a sum of positive squares in 4 ways, for example, as 5659641 + 22676644 = 2379^2 + 4762^2 .

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

It is not a de Polignac number, because 28336285 - 2⁷ = 28336157 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3916 + ... + 8485.

It is an arithmetic number, because the mean of its divisors is an integer number (4260087).

Almost surely, 2^28336285 is an apocalyptic number.

It is an amenable number.

28336285 is a deficient number, since it is larger than the sum of its proper divisors (5744411).

28336285 is a wasteful number, since it uses less digits than its factorization.

28336285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863.

The product of its digits is 69120, while the sum is 37.

The square root of 28336285 is about 5323.1837278080. The cubic root of 28336285 is about 304.8697284746.

The spelling of 28336285 in words is "twenty-eight million, three hundred thirty-six thousand, two hundred eighty-five".