27228 has 12 divisors (see below), whose sum is σ = 63560. Its totient is φ = 9072.

The previous prime is 27211. The next prime is 27239. The reversal of 27228 is 82272.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

27228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123 + ... + 1146.

2²⁷²²⁸ is an apocalyptic number.

It is an amenable number.

27228 is an abundant number, since it is smaller than the sum of its proper divisors (36332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31780).

27228 is a wasteful number, since it uses less digits than its factorization.

27228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 2274 counting only the distinct ones).

The product of its digits is 448, while the sum is 21.

The square root of 27228 is about 165.0090906587. The cubic root of 27228 is about 30.0842078578.

It can be divided in two parts, 272 and 28, that added together give a triangular number (300 = T₂₄).

The spelling of 27228 in words is "twenty-seven thousand, two hundred twenty-eight".