82128020

Names of 82128020

• Cardinal: 82128020 can be written as Eighty-two million, one hundred twenty-eight thousand and twenty.

Scientific notation

• Scientific notation: 8.212802 × 10⁷

Factors of 82128020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1130

Divisors of 82128020

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 13 17 20 26 34 52 65 68 85 130 170 221 260 289 340 442 578 884 1093 1105 1156 1445 2186 2210 2890 3757 4372 4420 5465 5780 7514 10930 14209 15028 18581 18785 21860 28418 37162 37570 56836 71045 74324 75140 92905 142090 185810 241553 284180 315877 371620 483106 631754 966212 1207765 1263508 1579385 2415530 3158770 4106401 4831060 6317540 8212802 16425604 20532005 41064010 82128020
• Sum of all divisors σ(n): 197484504
• Sum of proper divisors (its aliquot sum) s(n): 115356484
• 82128020 is an abundant number, because the sum of its proper divisors (115356484) is greater than itself. Its abundance is 33228464

Bases of 82128020

• Binary: 100111001010010110010010100₂
• Hexadecimal: 0x4E52C94
• Base-36: 1CWADW

Squares and roots of 82128020

• 82128020 squared (82128020²) is 6745011669120400
• 82128020 cubed (82128020³) is 553954453261753593608000
• The square root of 82128020 is 9062.4511033163
• The cube root of 82128020 is 434.6741206625

Scales and comparisons

• 82,128,020 seconds is equal to 2 years, 31 weeks, 5 days, 13 hours, 20 minutes, 20 seconds.
• To count from 1 to 82,128,020 would take you about three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 82128020 cubic inches would be around 36.2 feet tall.

Recreational maths with 82128020

• 82128020 backwards is 02082128
• The number of decimal digits it has is: 8
• The sum of 82128020's digits is 23
• More coming soon!