21393787800

Names of 21393787800

• Cardinal: 21393787800 can be written as Twenty-one billion, three hundred ninety-three million, seven hundred eighty-seven thousand, eight hundred.

Scientific notation

• Scientific notation: 2.13937878 × 10¹⁰

Factors of 21393787800

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1758

Divisors of 21393787800

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 14 15 20 21 22 24 25 28 30 33 35 40 42 44 50 55 56 60 66 70 75 77 84 88 100 105 110 120 132 140 150 154 165 168 175 200 210 220 231 264 275 280 300 308 330 331 350 385 420 440 462 525 550 600 616 660 662 700 770 825 840 924 993 1050 1100 1155 1320 1324 1399 1400 1540 1650 1655 1848 1925 1986 2100 2200 2310 2317 2648 2798 3080 3300 3310 3641 3850 3972 4197 4200 4620 4634 4965 5596 5775 6600 6620 6951 6995 7282 7700 7944 8275 8394 9240 9268 9793 9930 10923 11192 11550 11585 13240 13902 13990 14564 15389 15400 16550 16788 18205 18536 19586 19860 20985 21846 23100 23170 24825 25487 27804 27980 29128 29379 30778 33100 33576 34755 34975 36410 39172 39720 41970 43692 46167 46200 46340 48965 49650 50974 54615 55608 55960 57925 58758 61556 66200 69510 69950 72820 76461 76945 78344 83940 87384 91025 92334 92680 97930 99300 101948 104925 107723 109230 115850 117516 123112 127435 139020 139900 145640 146895 152922 153890 167880 173775 182050 184668 195860 198600 203896 209850 215446 218460 230835 231700 235032 244825 254870 273075 278040 279800 293790 305844 307780 323169 347550 364100 369336 382305 384725 391720 419700 430892 436920 461670 463069 463400 489650 509740 538615 546150 587580 611688 615560 637175 646338 695100 728200 734475 764610 769450 839400 861784 923340 926138 979300 1019480 1077230 1092300 1154175 1175160 1274350 1292676 1389207 1390200 1468950 1529220 1538900 1615845 1846680 1852276 1911525 1958600 2154460 2184600 2308350 2315345 2548700 2585352 2693075 2778414 2937900 3058440 3077800 3231690 3241483 3704552 3823050 4308920 4616700 4630690 5093759 5097400 5386150 5556828 5875800 6463380 6482966 6946035 7646100 8079225 9233400 9261380 9724449 10187518 10772300 11113656 11576725 12926760 12965932 13892070 15281277 15292200 16158450 16207415 18522760 19448898 20375036 21544600 23153450 25468795 25931864 27784140 30562554 32316900 32414830 34730175 35656313 38897796 40750072 46306900 48622245 50937590 55568280 61125108 64633800 64829660 69460350 71312626 76406385 77795592 81037075 92613800 97244490 101875180 106968939 122250216 127343975 129659320 138920700 142625252 152812770 162074150 178281565 194488980 203750360 213937878 243111225 254687950 277841400 285250504 305625540 324148300 356563130 382031925 388977960 427875756 486222450 509375900 534844695 611251080 648296600 713126260 764063850 855751512 891407825 972444900 1018751800 1069689390 1426252520 1528127700 1782815650 1944889800 2139378780 2674223475 3056255400 3565631300 4278757560 5348446950 7131262600 10696893900 21393787800
• Sum of all divisors σ(n): 82994688000
• Sum of proper divisors (its aliquot sum) s(n): 61600900200
• 21393787800 is an abundant number, because the sum of its proper divisors (61600900200) is greater than itself. Its abundance is 40207112400

Bases of 21393787800

• Binary: 10011111011001010110100101110011000₂
• Hexadecimal: 0x4FB2B4B98
• Base-36: 9TTB4BC

Squares and roots of 21393787800

• 21393787800 squared (21393787800²) is 457694156431428840000
• 21393787800 cubed (21393787800³) is 9791811659993993853760152000000
• The square root of 21393787800 is 146266.1539796545
• The cube root of 21393787800 is 2776.0624257541

Scales and comparisons

• 21,393,787,800 seconds is equal to 680 years, 13 weeks, 2 days, 6 hours, 50 minutes.
• To count from 1 to 21,393,787,800 would take you about one thousand, three hundred sixty 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 21393787800 cubic inches would be around 231.3 feet tall.

Recreational maths with 21393787800

• 21393787800 backwards is 00878739312
• The number of decimal digits it has is: 11
• The sum of 21393787800's digits is 48
• More coming soon!