27886109 has 12 divisors (see below), whose sum is σ = 29215188. Its totient is φ = 26607360.

The previous prime is 27886099. The next prime is 27886141. The reversal of 27886109 is 90168872.

It can be written as a sum of positive squares in 6 ways, for example, as 14417209 + 13468900 = 3797^2 + 3670^2 .

It is not a de Polignac number, because 27886109 - 2⁴ = 27886093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27886169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88937 + ... + 89249.

It is an arithmetic number, because the mean of its divisors is an integer number (2434599).

Almost surely, 2^27886109 is an apocalyptic number.

It is an amenable number.

27886109 is a deficient number, since it is larger than the sum of its proper divisors (1329079).

27886109 is an equidigital number, since it uses as much as digits as its factorization.

27886109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 27886109 is about 5280.7299684797. The cubic root of 27886109 is about 303.2466232318.

The spelling of 27886109 in words is "twenty-seven million, eight hundred eighty-six thousand, one hundred nine".