27994 has 4 divisors (see below), whose sum is σ = 41994. Its totient is φ = 13996.

The previous prime is 27983. The next prime is 27997. The reversal of 27994 is 49972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24025 + 3969 = 155^2 + 63^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 6.

It is a nialpdrome in base 8 and base 13.

It is not an unprimeable number, because it can be changed into a prime (27997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997 + ... + 7000.

2²⁷⁹⁹⁴ is an apocalyptic number.

27994 is a deficient number, since it is larger than the sum of its proper divisors (14000).

27994 is a wasteful number, since it uses less digits than its factorization.

27994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13999.

The product of its digits is 4536, while the sum is 31.

The square root of 27994 is about 167.3140759171. The cubic root of 27994 is about 30.3637205717.

It can be divided in two parts, 279 and 94, that added together give a palindrome (373).

The spelling of 27994 in words is "twenty-seven thousand, nine hundred ninety-four".