27913 has 4 divisors (see below), whose sum is σ = 28288. Its totient is φ = 27540.

The previous prime is 27901. The next prime is 27917. The reversal of 27913 is 31972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27913 is a prime.

It is a Duffinian number.

27913 is a lucky number.

It is a nialpdrome in base 8 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27917) 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 in 3 ways as a sum of consecutive naturals, for example, 33 + ... + 238.

It is an arithmetic number, because the mean of its divisors is an integer number (7072).

2²⁷⁹¹³ is an apocalyptic number.

It is an amenable number.

27913 is a deficient number, since it is larger than the sum of its proper divisors (375).

27913 is a wasteful number, since it uses less digits than its factorization.

27913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 378, while the sum is 22.

The square root of 27913 is about 167.0718408350. The cubic root of 27913 is about 30.3344067030.

It can be divided in two parts, 279 and 13, that added together give a palindrome (292).

The spelling of 27913 in words is "twenty-seven thousand, nine hundred thirteen".