27218 has 8 divisors (see below), whose sum is σ = 42240. Its totient is φ = 13140.

The previous prime is 27211. The next prime is 27239. The reversal of 27218 is 81272.

27218 = 42² + 43² + ... + 53².

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27218.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 27218.

It is not an unprimeable number, because it can be changed into a prime (27211) 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, 158 + ... + 281.

It is an arithmetic number, because the mean of its divisors is an integer number (5280).

2²⁷²¹⁸ is an apocalyptic number.

27218 is a deficient number, since it is larger than the sum of its proper divisors (15022).

27218 is a wasteful number, since it uses less digits than its factorization.

27218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 224, while the sum is 20.

The square root of 27218 is about 164.9787865151. The cubic root of 27218 is about 30.0805244080.

It can be divided in two parts, 27 and 218, that multiplied together give a triangular number (5886 = T₁₀₈).

The spelling of 27218 in words is "twenty-seven thousand, two hundred eighteen".