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8223 = 32741
BaseRepresentation
bin10000000011111
3102021120
42000133
5230343
6102023
732655
oct20037
912246
108223
1161a6
124913
133987
142dd5
152683
hex201f

8223 has 4 divisors (see below), whose sum is σ = 10968. Its totient is φ = 5480.

The previous prime is 8221. The next prime is 8231. The reversal of 8223 is 3228.

It can be divided in two parts, 82 and 23, that added together give a triangular number (105 = T14).

8223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8223 - 21 = 8221 is a prime.

It is a d-powerful number, because it can be written as 84 + 22 + 212 + 33 .

It is a D-number.

8223 is a lucky number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221) 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, 1368 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (2742).

28223 is an apocalyptic number.

8223 is a deficient number, since it is larger than the sum of its proper divisors (2745).

8223 is a wasteful number, since it uses less digits than its factorization.

8223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

The product of its digits is 96, while the sum is 15.

The square root of 8223 is about 90.6807587088. The cubic root of 8223 is about 20.1841328849.

The spelling of 8223 in words is "eight thousand, two hundred twenty-three".

Divisors: 1 3 2741 8223