27898085 has 4 divisors (see below), whose sum is σ = 33477708. Its totient is φ = 22318464.

The previous prime is 27898069. The next prime is 27898093. The reversal of 27898085 is 58089872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7845601 + 20052484 = 2801^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 27898085 - 2⁴ = 27898069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789804 + ... + 2789813.

It is an arithmetic number, because the mean of its divisors is an integer number (8369427).

Almost surely, 2^27898085 is an apocalyptic number.

It is an amenable number.

27898085 is a deficient number, since it is larger than the sum of its proper divisors (5579623).

27898085 is an equidigital number, since it uses as much as digits as its factorization.

27898085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579622.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 27898085 is about 5281.8637809016. The cubic root of 27898085 is about 303.2900278985.

The spelling of 27898085 in words is "twenty-seven million, eight hundred ninety-eight thousand, eighty-five".