21065764320

Names of 21065764320

• Cardinal: 21065764320 can be written as Twenty-one billion, sixty-five million, seven hundred sixty-four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.106576432 × 10¹⁰

Factors of 21065764320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1044

Divisors of 21065764320

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 127 144 160 180 240 254 288 360 381 480 508 635 720 762 907 1016 1143 1270 1440 1524 1814 1905 2032 2286 2540 2721 3048 3628 3810 4064 4535 4572 5080 5442 5715 6096 7256 7620 8163 9070 9144 10160 10884 11430 12192 13605 14512 15240 16129 16326 18140 18288 20320 21768 22860 27210 29024 30480 32258 32652 36280 36576 40815 43536 45720 48387 54420 60960 64516 65304 72560 80645 81630 87072 91440 96774 108840 115189 129032 130608 145120 145161 161290 163260 182880 193548 217680 230378 241935 258064 261216 290322 322580 326520 345567 387096 435360 460756 483870 516128 575945 580644 645160 653040 691134 725805 774192 921512 967740 1036701 1151890 1161288 1290320 1306080 1382268 1451610 1548384 1727835 1843024 1935480 2073402 2303780 2322576 2580640 2764536 2903220 3455670 3686048 3870960 4146804 4607560 4645152 5183505 5529072 5806440 6911340 7741920 8293608 9215120 10367010 11058144 11612880 13822680 14629003 16587216 18430240 20734020 23225760 27645360 29258006 33174432 41468040 43887009 55290720 58516012 73145015 82936080 87774018 117032024 131661027 146290030 165872160 175548036 219435045 234064048 263322054 292580060 351096072 438870090 468128096 526644108 585160120 658305135 702192144 877740180 1053288216 1170320240 1316610270 1404384288 1755480360 2106576432 2340640480 2633220540 3510960720 4213152864 5266441080 7021921440 10532882160 21065764320
• Sum of all divisors σ(n): 72537303384
• Sum of proper divisors (its aliquot sum) s(n): 51471539064
• 21065764320 is an abundant number, because the sum of its proper divisors (51471539064) is greater than itself. Its abundance is 30405774744

Bases of 21065764320

• Binary: 10011100111100111100000110111100000₂
• Hexadecimal: 0x4E79E0DE0
• Base-36: 9OE0FS0

Squares and roots of 21065764320

• 21065764320 squared (21065764320²) is 443766426385785062400
• 21065764320 cubed (21065764320³) is 9348278951371577522694893568000
• The square root of 21065764320 is 145140.4985522649
• The cube root of 21065764320 is 2761.8011557663

Scales and comparisons

• 21,065,764,320 seconds is equal to 669 years, 42 weeks, 6 days, 17 hours, 12 minutes.
• To count from 1 to 21,065,764,320 would take you about one thousand, three hundred thirty-nine 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 21065764320 cubic inches would be around 230.2 feet tall.

Recreational maths with 21065764320

• 21065764320 backwards is 02346756012
• 21065764320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21065764320's digits is 36
• More coming soon!