20816128125

Names of 20816128125

• Cardinal: 20816128125 can be written as Twenty billion, eight hundred sixteen million, one hundred twenty-eight thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 2.0816128125 × 10¹⁰

Factors of 20816128125

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 235

Divisors of 20816128125

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 5 9 13 15 17 25 39 45 51 65 75 85 117 125 153 195 197 221 225 255 289 325 375 425 585 591 625 663 765 867 975 985 1105 1125 1275 1445 1625 1773 1875 1989 2125 2561 2601 2925 2955 3125 3315 3349 3757 3825 4335 4875 4925 5525 5625 6375 7225 7683 8125 8865 9375 9945 10047 10625 11271 12805 13005 14625 14775 16575 16745 18785 19125 21675 23049 24375 24625 27625 28125 30141 31875 33813 36125 38415 40625 43537 44325 49725 50235 53125 56355 56933 64025 65025 73125 73875 82875 83725 93925 95625 108375 115245 121875 123125 130611 138125 150705 159375 169065 170799 180625 192075 217685 221625 248625 251175 281775 284665 320125 325125 365625 369375 391833 414375 418625 469625 478125 512397 541875 576225 615625 653055 690625 740129 753525 845325 853995 903125 960375 1088425 1108125 1243125 1255875 1408875 1423325 1600625 1625625 1846875 1959165 2071875 2093125 2220387 2348125 2561985 2709375 2881125 3265275 3700645 3767625 4226625 4269975 4801875 5442125 5540625 6215625 6279375 6661161 7044375 7116625 8003125 8128125 9795825 10465625 11101935 11740625 12809925 14405625 16326375 18503225 18838125 21133125 21349875 24009375 27210625 31396875 33305805 35221875 35583125 48979125 55509675 64049625 72028125 81631875 92516125 94190625 105665625 106749375 136053125 166529025 177915625 244895625 277548375 320248125 408159375 462580625 533746875 832645125 1224478125 1387741875 1601240625 2312903125 4163225625 6938709375 20816128125
• Sum of all divisors σ(n): 43212281112
• Sum of proper divisors (its aliquot sum) s(n): 22396152987
• 20816128125 is an abundant number, because the sum of its proper divisors (22396152987) is greater than itself. Its abundance is 1580024862

Bases of 20816128125

• Binary: 10011011000101111001110100001111101₂
• Hexadecimal: 0x4D8BCE87D
• Base-36: 9K9DV99

Squares and roots of 20816128125

• 20816128125 squared (20816128125²) is 433311190116416015625
• 20816128125 cubed (20816128125³) is 9019861251459549447052001953125
• The square root of 20816128125 is 144277.9543970595
• The cube root of 20816128125 is 2750.8483608475

Scales and comparisons

• 20,816,128,125 seconds is equal to 661 years, 46 weeks, 1 day, 9 hours, 48 minutes, 45 seconds.
• To count from 1 to 20,816,128,125 would take you about one thousand, three hundred twenty-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 20816128125 cubic inches would be around 229.2 feet tall.

Recreational maths with 20816128125

• 20816128125 backwards is 52182161802
• The number of decimal digits it has is: 11
• The sum of 20816128125's digits is 36
• More coming soon!