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27444 = 2232287

27444 has 12 divisors (see below), whose sum is σ = 64064. Its totient is φ = 9144.

The previous prime is 27437. The next prime is 27449. The reversal of 27444 is 44472.

27444 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 27444.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 27444.

It is not an unprimeable number, because it can be changed into a prime (27449) by changing a digit.

27444 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, 1132 + ... + 1155.

227444 is an apocalyptic number.

It is an amenable number.

27444 is an abundant number, since it is smaller than the sum of its proper divisors (36620).

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 (32032).

27444 is a wasteful number, since it uses less digits than its factorization.

27444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2292 counting only the distinct ones).

The product of its digits is 896, while the sum is 21.

The square root of 27444 is about 165.6623071190. The cubic root of 27444 is about 30.1635511911.

The spelling of 27444 in words is "twenty-seven thousand, four hundred forty-four", and thus it is an iban number.

Divisors: 1 2 3 4 6 12 2287 4574 6861 9148 13722 27444