27844 has 6 divisors (see below), whose sum is σ = 48734. Its totient is φ = 13920.

The previous prime is 27827. The next prime is 27847. The reversal of 27844 is 44872.

It can be written as a sum of positive squares in only one way, i.e., 26244 + 1600 = 162^2 + 40^2 .

It is not an unprimeable number, because it can be changed into a prime (27847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3477 + ... + 3484.

2²⁷⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

27844 is a deficient number, since it is larger than the sum of its proper divisors (20890).

27844 is a wasteful number, since it uses less digits than its factorization.

27844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965 (or 6963 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 27844 is about 166.8652150689. The cubic root of 27844 is about 30.3093908669.

The spelling of 27844 in words is "twenty-seven thousand, eight hundred forty-four".