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286223 = 7311319
BaseRepresentation
bin1000101111000001111
3112112121212
41011320033
533124343
610045035
72301320
oct1057017
9475555
10286223
11186053
1211977b
13a0382
1476447
1559c18
hex45e0f

286223 has 8 divisors (see below), whose sum is σ = 337920. Its totient is φ = 237240.

The previous prime is 286199. The next prime is 286243. The reversal of 286223 is 322682.

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

It is a cyclic number.

It is not a de Polignac number, because 286223 - 210 = 285199 is a prime.

It is a d-powerful number, because it can be written as 28 + 8 + 212 + 62 + 218 + 39 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443 + ... + 876.

It is an arithmetic number, because the mean of its divisors is an integer number (42240).

2286223 is an apocalyptic number.

286223 is a deficient number, since it is larger than the sum of its proper divisors (51697).

286223 is a wasteful number, since it uses less digits than its factorization.

286223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its digits is 1152, while the sum is 23.

The square root of 286223 is about 534.9981308379. The cubic root of 286223 is about 65.9024423373.

The spelling of 286223 in words is "two hundred eighty-six thousand, two hundred twenty-three".

Divisors: 1 7 31 217 1319 9233 40889 286223