20905849513920

Names of 20905849513920

• Cardinal: 20905849513920 can be written as Twenty trillion, nine hundred five billion, eight hundred forty-nine million, five hundred thirteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.090584951392 × 10¹³

Factors of 20905849513920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 5147

Divisors of 20905849513920

• Number of divisors d(n): 504
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 17 20 21 24 28 30 32 34 35 40 42 48 49 51 56 60 64 68 70 80 84 85 96 98 102 105 112 119 120 136 140 147 160 168 170 192 196 204 210 224 238 240 245 255 272 280 294 320 336 340 357 392 408 420 448 476 480 490 510 544 560 588 595 672 680 714 735 784 816 833 840 952 960 980 1020 1088 1120 1176 1190 1344 1360 1428 1470 1568 1632 1666 1680 1785 1904 1960 2040 2240 2352 2380 2499 2720 2856 2940 3136 3264 3332 3360 3570 3808 3920 4080 4165 4704 4760 4998 5113 5440 5712 5880 6664 6720 7140 7616 7840 8160 8330 9408 9520 9996 10226 11424 11760 12495 13328 14280 15339 15680 16320 16660 19040 19992 20452 22848 23520 24990 25565 26656 28560 30678 33320 35791 38080 39984 40904 47040 49980 51130 53312 57120 61356 66640 71582 76695 79968 81808 86921 99960 102260 107373 114240 122712 133280 143164 153390 159936 163616 173842 178955 199920 204520 214746 245424 250537 260763 266560 286328 306780 327232 347684 357910 399840 409040 429492 434605 490848 501074 521526 536865 572656 608447 613560 695368 715820 751611 799680 818080 858984 869210 981696 1002148 1043052 1073730 1145312 1216894 1227120 1252685 1303815 1390736 1431640 1503222 1636160 1717968 1738420 1825341 2004296 2086104 2147460 2290624 2433788 2454240 2505370 2607630 2781472 2863280 3006444 3042235 3435936 3476840 3650682 3758055 4008592 4172208 4259129 4294920 4867576 4908480 5010740 5215260 5562944 5726560 6012888 6084470 6871872 6953680 7301364 7516110 8017184 8344416 8518258 8589840 9126705 9735152 10021480 10430520 11453120 12025776 12168940 12777387 13907360 14602728 15032220 16034368 16688832 17036516 17179680 18253410 19470304 20042960 20861040 21295645 24051552 24337880 25554774 26142769 27814720 29205456 30064440 34073032 34359360 36506820 38940608 40085920 41722080 42591290 48103104 48675760 51109548 52285538 58410912 60128880 63886935 68146064 73013640 78428307 80171840 83444160 85182580 97351520 102219096 104571076 116821824 120257760 127773870 130713845 136292128 146027280 156856614 170365160 182999383 194703040 204438192 209142152 240515520 255547740 261427690 272584256 292054560 313713228 340730320 365998766 392141535 408876384 418284304 444427073 511095480 522855380 548998149 584109120 627426456 681460640 731997532 784283070 817752768 836568608 888854146 914996915 1022190960 1045710760 1097996298 1254852912 1280995681 1333281219 1362921280 1463995064 1568566140 1673137216 1777708292 1829993830 2044381920 2091421520 2195992596 2222135365 2509705824 2561991362 2666562438 2744990745 2927990128 3110989511 3137132280 3555416584 3659987660 3842987043 4088763840 4182843040 4391985192 4444270730 5019411648 5123982724 5333124876 5489981490 5855980256 6221979022 6274264560 6404978405 6666406095 7110833168 7319975320 7685974086 8365686080 8783970384 8888541460 9332968533 10247965448 10666249752 10979962980 11711960512 12443958044 12548529120 12809956810 13332812190 14221666336 14639950640 15371948172 15554947555 17567940768 17777082920 18665937066 19214935215 20495930896 21332499504 21776926577 21959925960 24887916088 25097058240 25619913620 26665624380 28443332672 29279901280 30743896344 31109895110 35135881536 35554165840 37331874132 38429870430 40991861792 42664999008 43553853154 43919851920 46664842665 49775832176 51239827240 53331248760 58559802560 61487792688 62219790220 65330779731 71108331680 74663748264 76859740860 81983723584 85329998016 87107706308 87839703840 93329685330 99551664352 102479654480 106662497520 108884632885 122975585376 124439580440 130661559462 142216663360 149327496528 153719481720 174215412616 175679407680 186659370660 199103328704 204959308960 213324995040 217769265770 245951170752 248879160880 261323118924 298654993056 307438963440 326653898655 348430825232 373318741320 409918617920 426649990080 435538531540 497758321760 522646237848 597309986112 614877926880 653307797310 696861650464 746637482640 871077063080 995516643520 1045292475696 1229755853760 1306615594620 1393723300928 1493274965280 1742154126160 2090584951392 2613231189240 2986549930560 3484308252320 4181169902784 5226462378480 6968616504640 10452924756960 20905849513920
• Sum of all divisors σ(n): 81770914815984
• Sum of proper divisors (its aliquot sum) s(n): 60865065302064
• 20905849513920 is an abundant number, because the sum of its proper divisors (60865065302064) is greater than itself. Its abundance is 39959215788144

Bases of 20905849513920

• Binary: 100110000001110000101101110111110011111000000₂
• Hexadecimal: 0x130385BBE7C0
• Base-36: 7ES0J0ZPC

Squares and roots of 20905849513920

• 20905849513920 squared (20905849513920²) is 437054543898669100273766400
• 20905849513920 cubed (20905849513920³) is 9136996524120518711693243032367628288000
• The square root of 20905849513920 is 4572291.4948546315
• The cube root of 20905849513920 is 27547.9491904693

Scales and comparisons

• 20,905,849,513,920 seconds is equal to 664,741 years, 18 weeks, 20 hours, 32 minutes.
• To count from 1 to 20,905,849,513,920 would take you about one million, six hundred sixty-one thousand, eight hundred fifty-three 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 20905849513920 cubic inches would be around 2295.7 feet tall.

Recreational maths with 20905849513920

• 20905849513920 backwards is 02931594850902
• The number of decimal digits it has is: 14
• The sum of 20905849513920's digits is 57
• More coming soon!