82 (number)

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

← 81 82 83 →
← 80 81 82 83 84 85 86 87 88 89 → List of numbers Integers ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	eighty-second
Ordinal	nd
Numeral system	82
Factorization	$2\cdot 41$
Divisors	1, 2, 41, 82
Greek numeral	ΠΒ´
Roman numeral	LXXXII
Binary	10100102
Ternary	100013
Senary	2146
Octal	1228
Duodecimal	6A12
Hexadecimal	5216

In mathematics

Eighty-two is the twenty-third biprime and the twelfth of the form (2.q). The aliquot sum of 82 is 44 within the aliquot sequence (82,44,40,50,43,1,0)) 82 being the eighth composite number in the 43-aliquot tree.

Eighty-two is a companion Pell number.

Eighty-two is a happy number

In other fields

Eighty-two is also:

• The atomic number of lead.
• In physics, the sixth Magic Number.

Mark 82 bomb

.

• the code for international direct dial phone calls to South Korea.
• The ISBN Group Identifier for books published in Norway .
• The number (*82) to unblock your caller ID for phones that block anonymous incoming calls.

In sports

• Both the NBA and NHL operate 82-game regular seasons.