21008936900

Names of 21008936900

• Cardinal: 21008936900 can be written as Twenty-one billion, eight million, nine hundred thirty-six thousand, nine hundred.

Scientific notation

• Scientific notation: 2.10089369 × 10¹⁰

Factors of 21008936900

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 451

Divisors of 21008936900

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 7 10 14 20 25 28 29 35 50 58 70 100 116 127 140 145 175 203 254 281 290 350 406 508 562 580 635 700 725 812 841 889 1015 1124 1270 1405 1450 1682 1778 1967 2030 2540 2810 2900 3175 3364 3556 3683 3934 4060 4205 4445 5075 5620 5887 6350 7025 7366 7868 8149 8410 8890 9835 10150 11774 12700 14050 14732 16298 16820 17780 18415 19670 20300 21025 22225 23548 25781 28100 29435 32596 35687 36830 39340 40745 42050 44450 49175 51562 57043 58870 71374 73660 81490 84100 88900 92075 98350 103124 106807 114086 117740 128905 142748 147175 162980 178435 184150 196700 203725 213614 228172 236321 249809 257810 285215 294350 356870 368300 407450 427228 472642 499618 515620 534035 570430 588700 644525 713740 747649 814900 892175 945284 999236 1034923 1068070 1140860 1181605 1249045 1289050 1426075 1495298 1654247 1784350 2069846 2136140 2363210 2498090 2578100 2670175 2852150 2990596 3308494 3568700 3738245 4139692 4726420 4996180 5174615 5340350 5704300 5908025 6245225 6616988 7244461 7476490 8271235 10349230 10680700 11816050 12490450 14488922 14952980 16542470 18691225 20698460 23632100 24980900 25873075 28977844 30012767 33084940 36222305 37382450 41356175 51746150 60025534 72444610 74764900 82712350 103492300 120051068 144889220 150063835 165424700 181111525 210089369 300127670 362223050 420178738 600255340 724446100 750319175 840357476 1050446845 1500638350 2100893690 3001276700 4201787380 5252234225 10504468450 21008936900
• Sum of all divisors σ(n): 54579173376
• Sum of proper divisors (its aliquot sum) s(n): 33570236476
• 21008936900 is an abundant number, because the sum of its proper divisors (33570236476) is greater than itself. Its abundance is 12561299576

Bases of 21008936900

• Binary: 10011100100001110101110111111000100₂
• Hexadecimal: 0x4E43AEFC4
• Base-36: 9NG6FGK

Squares and roots of 21008936900

• 21008936900 squared (21008936900²) is 441375429668181610000
• 21008936900 cubed (21008936900³) is 9272828551109215382230409000000
• The square root of 21008936900 is 144944.5994164667
• The cube root of 21008936900 is 2759.3154895981

Scales and comparisons

• 21,008,936,900 seconds is equal to 668 years, 6 days, 23 hours, 48 minutes, 20 seconds.
• To count from 1 to 21,008,936,900 would take you about one thousand, three hundred thirty-six 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 21008936900 cubic inches would be around 229.9 feet tall.

Recreational maths with 21008936900

• 21008936900 backwards is 00963980012
• The number of decimal digits it has is: 11
• The sum of 21008936900's digits is 38
• More coming soon!