27882191 has 2 divisors, whose sum is σ = 27882192. Its totient is φ = 27882190.

The previous prime is 27882163. The next prime is 27882199. The reversal of 27882191 is 19128872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27882191 - 2¹⁰ = 27881167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27882199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13941095 + 13941096.

It is an arithmetic number, because the mean of its divisors is an integer number (13941096).

Almost surely, 2^27882191 is an apocalyptic number.

27882191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27882191 is an equidigital number, since it uses as much as digits as its factorization.

27882191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 38.

The square root of 27882191 is about 5280.3589840086. The cubic root of 27882191 is about 303.2324205104.

The spelling of 27882191 in words is "twenty-seven million, eight hundred eighty-two thousand, one hundred ninety-one".