82 (number)
| ||||
|---|---|---|---|---|
| Cardinal | eighty-two | |||
| Ordinal | 82nd (eighty-second) | |||
| Factorization | 2 × 41 | |||
| Divisors | 1, 2, 41, 82 | |||
| Greek numeral | ΠΒ´ | |||
| Roman numeral | LXXXII, lxxxii | |||
| Binary | 10100102 | |||
| Ternary | 100013 | |||
| Senary | 2146 | |||
| Octal | 1228 | |||
| Duodecimal | 6A12 | |||
| Hexadecimal | 5216 | |||
82 (eighty-two) is the natural number following 81 and preceding 83.
In mathematics
[edit]82 is a happy number[1] and a companion Pell number.[2] It is palindromic in bases 3 (100013), 9 (1019) and 40 (2240).
With an aliquot sum of 44, 82 is within an aliquot sequence of four composite numbers (82, 44, 40, 50, 43, 1, 0) to the prime in the 43-aliquot tree.
In physics
[edit]82 is the sixth magic number.
References
[edit]- ↑ "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ↑ "Sloane's A002203 : Companion Pell numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
| |||||||||
| |||||||||
| |||||||||
| |||||||||
 | This article about a number is a stub. You can help Wikipedia by adding missing information. |