27856133 has 4 divisors (see below), whose sum is σ = 27936300. Its totient is φ = 27775968.

The previous prime is 27856123. The next prime is 27856139. The reversal of 27856133 is 33165872.

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 9597604 + 18258529 = 3098^2 + 4273^2 .

It is a cyclic number.

It is not a de Polignac number, because 27856133 - 2⁴ = 27856117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27856093 and 27856102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27856139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39560 + ... + 40257.

It is an arithmetic number, because the mean of its divisors is an integer number (6984075).

Almost surely, 2^27856133 is an apocalyptic number.

It is an amenable number.

27856133 is a deficient number, since it is larger than the sum of its proper divisors (80167).

27856133 is an equidigital number, since it uses as much as digits as its factorization.

27856133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80166.

The product of its digits is 30240, while the sum is 35.

The square root of 27856133 is about 5277.8909613595. The cubic root of 27856133 is about 303.1379265823.

The spelling of 27856133 in words is "twenty-seven million, eight hundred fifty-six thousand, one hundred thirty-three".