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27223 = 73889
BaseRepresentation
bin110101001010111
31101100021
412221113
51332343
6330011
7142240
oct65127
941307
1027223
11194a9
1213907
13c511
149cc7
1580ed
hex6a57

27223 has 4 divisors (see below), whose sum is σ = 31120. Its totient is φ = 23328.

The previous prime is 27211. The next prime is 27239. The reversal of 27223 is 32272.

It is a happy number.

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

It is a 6-Lehmer number, since φ(27223) divides (27223-1)6.

It is a cyclic number.

It is not a de Polignac number, because 27223 - 25 = 27191 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 27197 and 27206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (7780).

227223 is an apocalyptic number.

27223 is a deficient number, since it is larger than the sum of its proper divisors (3897).

27223 is an equidigital number, since it uses as much as digits as its factorization.

27223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896.

The product of its digits is 168, while the sum is 16.

The square root of 27223 is about 164.9939392826. The cubic root of 27223 is about 30.0823662457.

Adding to 27223 its reverse (32272), we get a palindrome (59495).

It can be divided in two parts, 2 and 7223, that added together give a square (7225 = 852).

The spelling of 27223 in words is "twenty-seven thousand, two hundred twenty-three", and thus it is an iban number.

Divisors: 1 7 3889 27223