27681089 has 8 divisors (see below), whose sum is σ = 28540320. Its totient is φ = 26834976.

The previous prime is 27681077. The next prime is 27681113. The reversal of 27681089 is 98018672.

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

It is a cyclic number.

It is not a de Polignac number, because 27681089 - 2²⁰ = 26632513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27681289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 7520.

It is an arithmetic number, because the mean of its divisors is an integer number (3567540).

Almost surely, 2^27681089 is an apocalyptic number.

It is an amenable number.

27681089 is a deficient number, since it is larger than the sum of its proper divisors (859231).

27681089 is an equidigital number, since it uses as much as digits as its factorization.

27681089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6559.

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

The square root of 27681089 is about 5261.2820680895. The cubic root of 27681089 is about 302.5016333040.

The spelling of 27681089 in words is "twenty-seven million, six hundred eighty-one thousand, eighty-nine".