21818720000

Names of 21818720000

• Cardinal: 21818720000 can be written as Twenty-one billion, eight hundred eighteen million, seven hundred twenty thousand.

Scientific notation

• Scientific notation: 2.181872 × 10¹⁰

Factors of 21818720000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 48

Divisors of 21818720000

• Number of divisors d(n): 810
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 23 25 28 32 35 40 44 46 49 50 55 56 64 70 77 80 88 92 98 100 110 112 115 121 125 128 140 154 160 161 175 176 184 196 200 220 224 230 242 245 250 253 256 275 280 308 320 322 350 352 368 385 392 400 440 448 460 484 490 500 506 539 550 560 575 605 616 625 640 644 700 704 736 770 784 800 805 847 875 880 896 920 968 980 1000 1012 1078 1100 1120 1127 1150 1210 1225 1232 1250 1265 1280 1288 1375 1400 1408 1472 1540 1568 1600 1610 1694 1750 1760 1771 1792 1840 1925 1936 1960 2000 2024 2156 2200 2240 2254 2300 2420 2450 2464 2500 2530 2576 2695 2750 2783 2800 2816 2875 2944 3025 3080 3136 3200 3220 3388 3500 3520 3542 3680 3850 3872 3920 4000 4025 4048 4235 4312 4375 4400 4480 4508 4600 4840 4900 4928 5000 5060 5152 5390 5500 5566 5600 5635 5750 5888 5929 6050 6125 6160 6272 6325 6400 6440 6776 6875 7000 7040 7084 7360 7700 7744 7840 8000 8050 8096 8470 8624 8750 8800 8855 8960 9016 9200 9625 9680 9800 9856 10000 10120 10304 10780 11000 11132 11200 11270 11500 11858 12100 12250 12320 12397 12544 12650 12880 13475 13552 13750 13915 14000 14080 14168 14375 14720 15125 15400 15488 15680 16000 16100 16192 16940 17248 17500 17600 17710 18032 18400 19250 19360 19481 19600 19712 20000 20125 20240 20608 21175 21560 22000 22264 22400 22540 23000 23716 24200 24500 24640 24794 25300 25760 26950 27104 27500 27830 28000 28175 28336 28750 29440 29645 30250 30625 30800 30976 31360 31625 32000 32200 32384 33880 34496 35000 35200 35420 36064 36800 38500 38720 38962 39200 40000 40250 40480 41216 42350 43120 44000 44275 44528 44800 45080 46000 47432 48125 48400 49000 49280 49588 50600 51520 53900 54208 55000 55660 56000 56350 56672 57500 59290 60500 61250 61600 61985 62720 63250 64400 64768 67375 67760 68992 69575 70000 70400 70840 72128 73600 75625 77000 77440 77924 78400 80000 80500 80960 84700 86240 88000 88550 89056 90160 92000 94864 96250 96800 97405 98000 98560 99176 100625 101200 103040 105875 107800 108416 110000 111320 112000 112700 113344 115000 118580 121000 122500 123200 123970 126500 128800 134750 135520 136367 137984 139150 140000 140875 141680 144256 147200 148225 151250 154000 154880 155848 156800 158125 160000 161000 161920 169400 172480 176000 177100 178112 180320 184000 189728 192500 193600 194810 196000 198352 201250 202400 206080 211750 215600 216832 220000 221375 222640 224000 225400 226688 230000 237160 242000 245000 246400 247940 253000 257600 269500 271040 272734 278300 280000 281750 283360 288512 296450 302500 308000 309925 311696 313600 316250 322000 323840 336875 338800 344960 347875 352000 354200 356224 360640 368000 379456 385000 387200 389620 392000 396704 402500 404800 423500 431200 440000 442750 445280 450800 453376 460000 474320 484000 487025 490000 492800 495880 506000 515200 529375 539000 542080 545468 556600 560000 563500 566720 592900 605000 616000 619850 623392 632500 644000 673750 677600 681835 689920 695750 704375 708400 712448 721280 736000 741125 758912 770000 774400 779240 784000 793408 805000 809600 847000 862400 880000 885500 890560 901600 920000 948640 968000 974050 980000 991760 1012000 1030400 1058750 1078000 1084160 1090936 1106875 1113200 1120000 1127000 1133440 1185800 1210000 1232000 1239700 1246784 1265000 1288000 1347500 1355200 1363670 1391500 1408750 1416800 1442560 1482250 1517824 1540000 1549625 1558480 1568000 1586816 1610000 1619200 1694000 1724800 1739375 1760000 1771000 1781120 1803200 1840000 1897280 1936000 1948100 1960000 1983520 2024000 2117500 2156000 2181872 2213750 2226400 2254000 2266880 2371600 2420000 2435125 2464000 2479400 2493568 2530000 2576000 2695000 2710400 2727340 2783000 2817500 2833600 2964500 3080000 3099250 3116960 3173632 3220000 3388000 3409175 3449600 3478750 3542000 3562240 3606400 3680000 3705625 3794560 3872000 3896200 3920000 3967040 4048000 4235000 4312000 4363744 4427500 4452800 4508000 4743200 4840000 4870250 4958800 4987136 5060000 5152000 5390000 5420800 5454680 5566000 5635000 5667200 5929000 6160000 6198500 6233920 6440000 6776000 6818350 6957500 7084000 7212800 7411250 7589120 7748125 7792400 7840000 7934080 8096000 8470000 8624000 8727488 8855000 8905600 9016000 9486400 9680000 9740500 9917600 10120000 10780000 10909360 11132000 11270000 11334400 11858000 12175625 12320000 12397000 12467840 12880000 13552000 13636700 13915000 14168000 14822500 15496250 15584800 15868160 16940000 17045875 17248000 17454976 17710000 17811200 18032000 18972800 19360000 19481000 19835200 20240000 21560000 21818720 22264000 22540000 23716000 24351250 24794000 24935680 25760000 27104000 27273400 27830000 28336000 29645000 30992500 31169600 33880000 34091750 34909952 35420000 36064000 37945600 38962000 39670400 40480000 43120000 43637440 44528000 45080000 47432000 48702500 49588000 54546800 55660000 56672000 59290000 61985000 62339200 67760000 68183500 70840000 77924000 79340800 85229375 86240000 87274880 89056000 90160000 94864000 97405000 99176000 109093600 111320000 118580000 123970000 124678400 135520000 136367000 141680000 155848000 170458750 174549760 180320000 189728000 194810000 198352000 218187200 222640000 237160000 247940000 272734000 283360000 311696000 340917500 389620000 396704000 436374400 445280000 474320000 495880000 545468000 623392000 681835000 779240000 872748800 948640000 991760000 1090936000 1363670000 1558480000 1983520000 2181872000 2727340000 3116960000 4363744000 5454680000 10909360000 21818720000
• Sum of all divisors σ(n): 72612212904
• Sum of proper divisors (its aliquot sum) s(n): 50793492904
• 21818720000 is an abundant number, because the sum of its proper divisors (50793492904) is greater than itself. Its abundance is 28974772904

Bases of 21818720000

• Binary: 10100010100011111110011111100000000₂
• Hexadecimal: 0x5147F3F00
• Base-36: A0UAW3K

Squares and roots of 21818720000

• 21818720000 squared (21818720000²) is 476056542438400000000
• 21818720000 cubed (21818720000³) is 10386944403631566848000000000000
• The square root of 21818720000 is 147711.6109180317
• The cube root of 21818720000 is 2794.3218262395

Scales and comparisons

• 21,818,720,000 seconds is equal to 693 years, 39 weeks, 6 days, 11 hours, 33 minutes, 20 seconds.
• To count from 1 to 21,818,720,000 would take you about one thousand, three hundred eighty-seven 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 21818720000 cubic inches would be around 232.9 feet tall.

Recreational maths with 21818720000

• 21818720000 backwards is 00002781812
• The number of decimal digits it has is: 11
• The sum of 21818720000's digits is 29
• More coming soon!