27828085 has 8 divisors (see below), whose sum is σ = 33447096. Its totient is φ = 22226880.

The previous prime is 27828071. The next prime is 27828109. The reversal of 27828085 is 58082872.

It can be written as a sum of positive squares in 4 ways, for example, as 18335524 + 9492561 = 4282^2 + 3081^2 .

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

It is not a de Polignac number, because 27828085 - 2⁷ = 27827957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 7495.

It is an arithmetic number, because the mean of its divisors is an integer number (4180887).

Almost surely, 2^27828085 is an apocalyptic number.

It is an amenable number.

27828085 is a deficient number, since it is larger than the sum of its proper divisors (5619011).

27828085 is an equidigital number, since it uses as much as digits as its factorization.

27828085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903.

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 27828085 is about 5275.2331702021. The cubic root of 27828085 is about 303.0361504574.

The spelling of 27828085 in words is "twenty-seven million, eight hundred twenty-eight thousand, eighty-five".