21386603840

Names of 21386603840

• Cardinal: 21386603840 can be written as Twenty-one billion, three hundred eighty-six million, six hundred three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.138660384 × 10¹⁰

Factors of 21386603840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 464

Divisors of 21386603840

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 37 40 43 56 64 68 70 74 80 85 86 112 119 136 140 148 160 170 172 185 215 224 238 259 272 280 296 301 320 340 344 353 370 430 448 476 518 544 560 592 595 602 629 680 688 706 731 740 860 952 1036 1088 1120 1184 1190 1204 1258 1295 1360 1376 1412 1462 1480 1505 1591 1720 1765 1904 2072 2240 2368 2380 2408 2471 2516 2590 2720 2752 2824 2924 2960 3010 3145 3182 3440 3530 3655 3808 4144 4403 4760 4816 4942 5032 5117 5180 5440 5648 5848 5920 6001 6020 6290 6364 6880 7060 7310 7616 7955 8288 8806 9520 9632 9884 10064 10234 10360 11137 11296 11696 11840 12002 12040 12355 12580 12728 13061 13760 14120 14620 15179 15910 16576 17612 19040 19264 19768 20128 20468 20720 22015 22274 22592 23392 24004 24080 24710 25160 25456 25585 26122 27047 28240 29240 30005 30358 31820 35224 38080 39536 40256 40936 41440 42007 44030 44548 46784 48008 48160 49420 50320 50912 51170 52244 54094 55685 56480 58480 60010 60716 63640 65305 70448 75895 79072 81872 82880 84014 88060 89096 91427 96016 96320 98840 100640 101824 102340 104488 106253 108188 111370 112960 116960 120020 121432 127280 130610 135235 140896 151790 158144 163744 168028 176120 178192 182854 189329 192032 197680 201280 204680 208976 210035 212506 216376 222037 222740 233920 240040 242864 254560 258043 261220 270470 281792 303580 327488 336056 352240 356384 365708 378658 384064 395360 409360 417952 420070 425012 432752 444074 445480 457135 480080 485728 509120 516086 522440 531265 540940 561623 607160 672112 704480 712768 731416 757316 790720 818720 835904 840140 850024 865504 888148 890960 914270 946645 960160 971456 1032172 1044880 1062530 1081880 1110185 1123246 1214320 1290215 1344224 1408960 1462832 1514632 1554259 1637440 1680280 1700048 1731008 1776296 1781920 1806301 1828540 1893290 1920320 2064344 2089760 2125060 2163760 2220370 2246492 2428640 2580430 2688448 2808115 2925664 3029264 3108518 3360560 3400096 3552592 3563840 3612602 3657080 3786580 3931361 4128688 4179520 4250120 4327520 4440740 4492984 4857280 5160860 5616230 5851328 6058528 6217036 6721120 6800192 7105184 7225204 7314160 7573160 7771295 7862722 8257376 8500240 8655040 8881480 8985968 9031505 9547591 10321720 11232460 12117056 12434072 13442240 14210368 14450408 14628320 15146320 15542590 15725444 16514752 17000480 17762960 17971936 18063010 19095182 19656805 20643440 22464920 24868144 28900816 29256640 30292640 31085180 31450888 34000960 35525920 35943872 36126020 38190364 39313610 41286880 44929840 47737955 49736288 57801632 60585280 62170360 62901776 66833137 71051840 72252040 76380728 78627220 82573760 89859680 95475910 99472576 115603264 124340720 125803552 133666274 144504080 152761456 157254440 179719360 190951820 248681440 251607104 267332548 289008160 305522912 314508880 334165685 381903640 497362880 534665096 578016320 611045824 629017760 668331370 763807280 1069330192 1258035520 1336662740 1527614560 2138660384 2673325480 3055229120 4277320768 5346650960 10693301920 21386603840
• Sum of all divisors σ(n): 64946686464
• Sum of proper divisors (its aliquot sum) s(n): 43560082624
• 21386603840 is an abundant number, because the sum of its proper divisors (43560082624) is greater than itself. Its abundance is 22173478784

Bases of 21386603840

• Binary: 10011111010101111011010110101000000₂
• Hexadecimal: 0x4FABDAD40
• Base-36: 9TP154W

Squares and roots of 21386603840

• 21386603840 squared (21386603840²) is 457386823809102745600
• 21386603840 cubed (21386603840³) is 9781950802441160206003503104000
• The square root of 21386603840 is 146241.5940832157
• The cube root of 21386603840 is 2775.7516602443

Scales and comparisons

• 21,386,603,840 seconds is equal to 680 years, 1 week, 3 days, 3 hours, 17 minutes, 20 seconds.
• To count from 1 to 21,386,603,840 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 21386603840 cubic inches would be around 231.3 feet tall.

Recreational maths with 21386603840

• 21386603840 backwards is 04830668312
• The number of decimal digits it has is: 11
• The sum of 21386603840's digits is 41
• More coming soon!