### About the Number 284 (two hundred eighty-four)

While creating a nBAB for the 220, MathBabbler learned that 220 was an amicable number with `284`. In other words, the sum of the proper divisors of 220 equals the sum of the proper divisors of `284`.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
284 is a natural, whole, integer
284 is even
284 proper divisors are: 1,2,4,71,142,
284 is deficient (sum of divisors is 220)
284 is unhappy
284 is not a Harshad number
284 is not prime
284 has the prime factors: 2*2*71 (sum=75)
284 sum of prime factors is: 75
284 in octal is 0434
284 in hexadecimal is 0x11c
284 in binary is 100011100 (is evil)
284 nearest square numbers: -28...5 (256...289 )
sqrt(284) = 16.8523
ln(284) = 5.64897
log(284) = 2.45332
284 reciprocal is .00352112676056338028169014084507
284! is 1.0682e+575
284 is 90.4 Pi years
284 is 14 score and 4 years
284 written as a Roman numeral is CCLXXXIV
```

`284` and 220 are the smallest amicable pair.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 20 April 2009 