27806941 has 4 divisors (see below), whose sum is σ = 28187932. Its totient is φ = 27425952.

The previous prime is 27806921. The next prime is 27806953. The reversal of 27806941 is 14960872.

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 9922500 + 17884441 = 3150^2 + 4229^2 .

It is a cyclic number.

It is not a de Polignac number, because 27806941 - 2⁷ = 27806813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27806941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27806921) by changing a digit.

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, 190386 + ... + 190531.

It is an arithmetic number, because the mean of its divisors is an integer number (7046983).

Almost surely, 2^27806941 is an apocalyptic number.

27806941 is the 3045-th hex number.

It is an amenable number.

27806941 is a deficient number, since it is larger than the sum of its proper divisors (380991).

27806941 is an equidigital number, since it uses as much as digits as its factorization.

27806941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380990.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 27806941 is about 5273.2287073481. The cubic root of 27806941 is about 302.9593812528.

The spelling of 27806941 in words is "twenty-seven million, eight hundred six thousand, nine hundred forty-one".