20640916800

Names of 20640916800

• Cardinal: 20640916800 can be written as Twenty billion, six hundred forty million, nine hundred sixteen thousand, eight hundred.

Scientific notation

• Scientific notation: 2.06409168 × 10¹⁰

Factors of 20640916800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 216

Divisors of 20640916800

• Number of divisors d(n): 840
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 30 32 35 36 40 42 45 48 49 50 54 56 60 63 64 70 72 75 80 84 90 96 98 100 105 108 112 120 126 135 140 144 147 150 160 168 175 180 189 192 196 199 200 210 216 224 225 240 245 252 270 280 288 294 300 315 320 336 343 350 360 378 392 398 400 420 432 441 448 450 480 490 504 525 540 560 576 588 597 600 630 672 675 686 700 720 735 756 784 796 800 840 864 882 900 945 960 980 995 1008 1029 1050 1080 1120 1176 1194 1200 1225 1260 1323 1344 1350 1372 1393 1400 1440 1470 1512 1568 1575 1592 1600 1680 1715 1728 1764 1791 1800 1890 1960 1990 2016 2058 2100 2160 2205 2240 2352 2388 2400 2401 2450 2520 2646 2700 2744 2786 2800 2880 2940 2985 3024 3087 3136 3150 3184 3360 3430 3528 3582 3600 3675 3780 3920 3980 4032 4116 4179 4200 4320 4410 4704 4725 4776 4800 4802 4900 4975 5040 5145 5292 5373 5400 5488 5572 5600 5880 5970 6048 6174 6300 6368 6615 6720 6860 6965 7056 7164 7200 7203 7350 7560 7840 7960 8232 8358 8400 8575 8640 8820 8955 9261 9408 9450 9552 9604 9751 9800 9950 10080 10290 10584 10746 10800 10976 11025 11144 11200 11760 11940 12005 12096 12348 12537 12600 12736 13230 13720 13930 14112 14328 14400 14406 14700 14925 15120 15435 15680 15920 16464 16716 16800 17150 17640 17910 18522 18900 19104 19208 19502 19600 19900 20160 20580 20895 21168 21492 21600 21609 21952 22050 22288 23520 23880 24010 24696 25074 25200 25725 26460 26865 27440 27860 28224 28656 28812 29253 29400 29850 30240 30870 31840 32928 33075 33432 33600 34300 34825 35280 35820 36015 37044 37611 37800 38208 38416 39004 39200 39800 41160 41790 42336 42984 43200 43218 44100 44576 44775 46305 47040 47760 48020 48755 49392 50148 50400 51450 52920 53730 54880 55720 57312 57624 58506 58800 59700 60025 60480 61740 62685 63680 64827 65856 66150 66864 68257 68600 69650 70560 71640 72030 74088 75222 75600 76832 77175 78008 78400 79600 82320 83580 84672 85968 86436 87759 88200 89152 89550 92610 95520 96040 97510 98784 100296 100800 102900 104475 105840 107460 108045 109760 111440 114624 115248 117012 117600 119400 120050 123480 125370 129654 132300 133728 134325 136514 137200 139300 141120 143280 144060 146265 148176 150444 151200 153664 154350 156016 159200 164640 167160 171936 172872 175518 176400 179100 180075 185220 188055 191040 192080 195020 197568 200592 204771 205800 208950 211680 214920 216090 222880 230496 231525 234024 235200 238800 240100 243775 246960 250740 259308 263277 264600 267456 268650 273028 274400 278600 286560 288120 292530 296352 300888 302400 308700 312032 313425 318400 324135 329280 334320 341285 343872 345744 351036 352800 358200 360150 370440 376110 384160 390040 401184 409542 411600 417900 423360 429840 432180 438795 445760 460992 463050 468048 477600 477799 480200 487550 493920 501480 518616 526554 529200 537300 540225 546056 548800 557200 573120 576240 585060 592704 601776 614313 617400 624064 626850 648270 668640 682570 691488 702072 705600 716400 720300 731325 740880 752220 768320 780080 802368 819084 823200 835800 859680 864360 877590 926100 936096 940275 955200 955598 960400 975100 987840 1002960 1023855 1037232 1053108 1058400 1074600 1080450 1092112 1114400 1152480 1170120 1203552 1228626 1234800 1253700 1296540 1316385 1337280 1365140 1382976 1404144 1432800 1433397 1440600 1462650 1481760 1504440 1560160 1620675 1638168 1646400 1671600 1706425 1719360 1728720 1755180 1842939 1852200 1872192 1880550 1911196 1920800 1950200 2005920 2047710 2074464 2106216 2116800 2149200 2160900 2184224 2193975 2228800 2304960 2340240 2388995 2407104 2457252 2469600 2507400 2593080 2632770 2730280 2808288 2865600 2866794 2881200 2925300 2963520 3008880 3071565 3120320 3241350 3276336 3343200 3412850 3457440 3510360 3685878 3704400 3761100 3822392 3841600 3900400 4011840 4095420 4148928 4212432 4298400 4300191 4321800 4368448 4387950 4680480 4777990 4914504 4939200 5014800 5119275 5186160 5265540 5460560 5616576 5733588 5762400 5850600 6017760 6143130 6482700 6552672 6581925 6686400 6825700 6914880 7020720 7166985 7371756 7408800 7522200 7644784 7800800 8190840 8424864 8596800 8600382 8643600 8775900 9214695 9360960 9555980 9829008 10029600 10238550 10372320 10531080 10921120 11467176 11524800 11701200 11944975 12035520 12286260 12900573 12965400 13105344 13163850 13651400 14041440 14333970 14743512 14817600 15044400 15289568 15357825 15601600 16381680 16849728 17200764 17287200 17551800 18429390 19111960 19658016 20059200 20477100 20744640 21062160 21500955 21842240 22934352 23402400 23889950 24572520 25801146 25930800 26327700 27302800 28082880 28667940 29487024 30088800 30579136 30715650 32763360 34401528 34574400 35103600 35834925 36858780 38223920 39316032 40954200 42124320 43001910 45868704 46073475 46804800 47779900 49145040 51602292 51861600 52655400 54605600 57335880 58974048 60177600 61431300 64502865 65526720 68803056 70207200 71669850 73717560 76447840 81908400 84248640 86003820 91737408 92146950 95559800 98290080 103204584 103723200 105310800 107504775 109211200 114671760 117948096 122862600 129005730 137606112 140414400 143339700 147435120 152895680 163816800 172007640 184293900 191119600 196580160 206409168 210621600 215009550 229343520 245725200 258011460 275212224 286679400 294870240 322514325 327633600 344015280 368587800 382239200 412818336 421243200 430019100 458687040 491450400 516022920 573358800 589740480 645028650 688030560 737175600 764478400 825636672 860038200 982900800 1032045840 1146717600 1290057300 1376061120 1474351200 1720076400 2064091680 2293435200 2580114600 2948702400 3440152800 4128183360 5160229200 6880305600 10320458400 20640916800
• Sum of all divisors σ(n): 88220296000
• Sum of proper divisors (its aliquot sum) s(n): 67579379200
• 20640916800 is an abundant number, because the sum of its proper divisors (67579379200) is greater than itself. Its abundance is 46938462400

Bases of 20640916800

• Binary: 10011001110010010110110010101000000₂
• Hexadecimal: 0x4CE4B6540
• Base-36: 9HD2HC0

Squares and roots of 20640916800

• 20640916800 squared (20640916800²) is 426047446344522240000
• 20640916800 cubed (20640916800³) is 8794009892849747691589632000000
• The square root of 20640916800 is 143669.4706609585
• The cube root of 20640916800 is 2743.1085539639

Scales and comparisons

• 20,640,916,800 seconds is equal to 656 years, 16 weeks, 3 days, 12 hours.
• To count from 1 to 20,640,916,800 would take you about one thousand, three hundred twelve 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 20640916800 cubic inches would be around 228.6 feet tall.

Recreational maths with 20640916800

• 20640916800 backwards is 00861904602
• 20640916800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20640916800's digits is 36
• More coming soon!