28299085 has 16 divisors (see below), whose sum is σ = 36111744. Its totient is φ = 21241792.

The previous prime is 28299053. The next prime is 28299091. The reversal of 28299085 is 58099282.

It is a cyclic number.

It is not a de Polignac number, because 28299085 - 2⁵ = 28299053 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 15 ways as a sum of consecutive naturals, for example, 3774 + ... + 8416.

It is an arithmetic number, because the mean of its divisors is an integer number (2256984).

Almost surely, 2^28299085 is an apocalyptic number.

It is an amenable number.

28299085 is a deficient number, since it is larger than the sum of its proper divisors (7812659).

28299085 is a wasteful number, since it uses less digits than its factorization.

28299085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 28299085 is about 5319.6884307260. The cubic root of 28299085 is about 304.7362586093.

The spelling of 28299085 in words is "twenty-eight million, two hundred ninety-nine thousand, eighty-five".