27709893 has 12 divisors (see below), whose sum is σ = 40439308. Its totient is φ = 18282240.

The previous prime is 27709867. The next prime is 27709919. The reversal of 27709893 is 39890772.

It is an interprime number because it is at equal distance from previous prime (27709867) and next prime (27709919).

It can be written as a sum of positive squares in 2 ways, for example, as 16136289 + 11573604 = 4017^2 + 3402^2 .

It is not a de Polignac number, because 27709893 - 2⁵ = 27709861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27709193) 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 11 ways as a sum of consecutive naturals, for example, 14998 + ... + 16743.

Almost surely, 2^27709893 is an apocalyptic number.

It is an amenable number.

27709893 is a deficient number, since it is larger than the sum of its proper divisors (12729415).

27709893 is a wasteful number, since it uses less digits than its factorization.

27709893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31844 (or 31841 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 27709893 is about 5264.0187119728. The cubic root of 27709893 is about 302.6065212361.

The spelling of 27709893 in words is "twenty-seven million, seven hundred nine thousand, eight hundred ninety-three".