21205277940

Names of 21205277940

• Cardinal: 21205277940 can be written as Twenty-one billion, two hundred five million, two hundred seventy-seven thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.120527794 × 10¹⁰

Factors of 21205277940

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 6613

Divisors of 21205277940

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 14 15 19 20 21 22 28 30 33 35 37 38 42 44 55 57 60 66 70 74 76 77 84 95 105 110 111 114 132 133 140 148 154 165 185 190 209 210 220 222 228 231 259 266 285 308 330 370 380 385 399 407 418 420 444 462 518 532 555 570 627 660 665 703 740 770 777 798 814 836 924 1036 1045 1110 1140 1155 1221 1254 1295 1330 1406 1463 1540 1554 1596 1628 1995 2035 2090 2109 2220 2310 2442 2508 2590 2660 2812 2849 2926 3108 3135 3515 3885 3990 4070 4180 4218 4389 4620 4884 4921 5180 5698 5852 6105 6270 6529 7030 7315 7733 7770 7980 8140 8436 8547 8778 9842 10545 11396 12210 12540 13058 14060 14245 14630 14763 15466 15540 17094 17556 19587 19684 21090 21945 23199 24420 24605 26116 28490 29260 29526 30932 32645 34188 38665 39174 42180 42735 43890 45703 46398 49210 54131 56980 59052 65290 71819 73815 77330 78348 85470 87780 91406 92796 97935 98420 108262 115995 124051 130580 137109 143638 147630 154660 162393 170940 182812 195870 215457 216524 228515 231990 241573 248102 270655 274218 287276 295260 324786 359095 372153 391740 430914 457030 463980 483146 496204 502733 541310 548436 620255 649572 685545 718190 724719 744306 811965 861828 868357 914060 966292 1005466 1077285 1082620 1207865 1240510 1364561 1371090 1436380 1449438 1488612 1508199 1623930 1691011 1736714 1860765 2010932 2154570 2415730 2481020 2513665 2605071 2657303 2729122 2742180 2898876 3016398 3247860 3382022 3473428 3623595 3721530 4093683 4309140 4341785 4589887 4831460 5027330 5073033 5210142 5314606 5458244 6032796 6764044 6822805 7247190 7443060 7540995 7971909 8187366 8455055 8683570 9179774 9551927 10054660 10146066 10420284 10629212 13025355 13286515 13645610 13769661 14494380 15081990 15943818 16374732 16910110 17367140 18359548 18601121 19103854 20292132 20468415 22949435 25365165 26050710 26573030 27291220 27539322 28655781 30163980 31887636 32129209 33820220 37202242 38207708 39859545 40936830 45898870 47759635 50488757 50730330 52101420 53146060 55078644 55803363 57311562 64258418 68848305 74404484 79719090 81873660 91797740 93005605 95519270 96387627 100977514 101460660 111606726 114623124 128516836 137696610 143278905 151466271 159438180 160646045 186011210 191038540 192775254 201955028 223213452 252443785 275393220 279016815 286557810 302932542 321292090 353421299 372022420 385550508 481938135 504887570 558033630 573115620 605865084 642584180 706842598 757331355 963876270 1009775140 1060263897 1116067260 1413685196 1514662710 1767106495 1927752540 2120527794 3029325420 3534212990 4241055588 5301319485 7068425980 10602638970 21205277940
• Sum of all divisors σ(n): 80040038400
• Sum of proper divisors (its aliquot sum) s(n): 58834760460
• 21205277940 is an abundant number, because the sum of its proper divisors (58834760460) is greater than itself. Its abundance is 37629482520

Bases of 21205277940

• Binary: 10011101111111011101101110011110100₂
• Hexadecimal: 0x4EFEEDCF4
• Base-36: 9QP2P6C

Squares and roots of 21205277940

• 21205277940 squared (21205277940²) is 449663812512650643600
• 21205277940 cubed (21205277940³) is 9535246123890806663657882184000
• The square root of 21205277940 is 145620.3211780553
• The cube root of 21205277940 is 2767.8846661727

Scales and comparisons

• 21,205,277,940 seconds is equal to 674 years, 13 weeks, 4 days, 10 hours, 59 minutes.
• To count from 1 to 21,205,277,940 would take you about one thousand, three hundred forty-eight 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 21205277940 cubic inches would be around 230.7 feet tall.

Recreational maths with 21205277940

• 21205277940 backwards is 04977250212
• The number of decimal digits it has is: 11
• The sum of 21205277940's digits is 39
• More coming soon!