82 (number)

81 82 83
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Cardinal eighty-two
Ordinal 82nd
(eighty-second)
Factorization 2 × 41
Divisors 1, 2, 41, 82
Greek numeral ΠΒ´
Roman numeral LXXXII
Binary 10100102
Ternary 100013
Quaternary 11024
Quinary 3125
Senary 2146
Octal 1228
Duodecimal 6A12
Hexadecimal 5216
Vigesimal 4220
Base 36 2A36

82 (eighty-two) is the natural number following 81 and preceding 83.

In mathematics

82 is:

  • the twenty-third biprime and the twelfth of the form (2.q).
  • a companion Pell number.[1]
  • a happy number.[2]
  • palindromic in bases 3 (100013), 9 (1019) and 40 (2240).

In astronomy

In other fields

Eighty-two is also:

In sports

  • Both the NBA and NHL operate 82-game regular seasons.
  • In Major League Baseball, the number of games a team must win to secure a winning season.

References

  1. "Sloane's A002203 : Companion Pell numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
  2. "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
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