Selected numbers

• 80000 – round number
• 80286 – model number of the Intel 80286
  Intel 80286
  The Intel 80286 , introduced on 1 February 1982, was a 16-bit x86 microprocessor with 134,000 transistors. Like its contemporary simpler cousin, the 80186, it could correctly execute most software written for the earlier Intel 8086 and 8088...
  
   chip
• 80386 – model number of the Intel 80386
  Intel 80386
  The Intel 80386, also known as the i386, or just 386, was a 32-bit microprocessor introduced by Intel in 1985. The first versions had 275,000 transistors and were used as the central processing unit of many workstations and high-end personal computers of the time...
  
   chip
• 80486 – model number of the Intel 80486
  Intel 80486
  The Intel 80486 microprocessor was a higher performance follow up on the Intel 80386. Introduced in 1989, it was the first tightly pipelined x86 design as well as the first x86 chip to use more than a million transistors, due to a large on-chip cache and an integrated floating point unit...
  
   chip
• 80782 – Pell number
• 82000 – is the only number greater than 2 that can be written from base 2 to base 5, using only 0's and 1's.
• 82656 – Kaprekar number
• 86400 – second
  Second
  The second is a unit of measurement of time, and is the International System of Units base unit of time. It may be measured using a clock....
  
  s in a day
  Day
  A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun...
  
  ; 28801-gonal
  Polygonal number
  In mathematics, a polygonal number is a number represented as dots or pebbles arranged in the shape of a regular polygon. The dots were thought of as alphas . These are one type of 2-dimensional figurate numbers.- Definition and examples :...
  
   number; highly powerful number; solution to Singmaster's problem when n = 11
• 87360 – unitary perfect number
  Unitary perfect number
  A unitary perfect number is an integer which is the sum of its positive proper unitary divisors, not including the number itself. Some perfect numbers are not unitary perfect numbers, and some unitary perfect numbers are not regular perfect numbers.Thus, 60 is a unitary perfect...