21081706800

Names of 21081706800

• Cardinal: 21081706800 can be written as Twenty-one billion, eighty-one million, seven hundred six thousand, eight hundred.

Scientific notation

• Scientific notation: 2.10817068 × 10¹⁰

Factors of 21081706800

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 13466

Divisors of 21081706800

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 14 15 16 17 20 21 22 24 25 28 30 33 34 35 40 42 44 48 50 51 55 56 60 66 68 70 75 77 80 84 85 88 100 102 105 110 112 119 120 132 136 140 150 154 165 168 170 175 176 187 200 204 210 220 231 238 240 255 264 272 275 280 300 308 330 336 340 350 357 374 385 400 408 420 425 440 462 476 510 525 528 550 560 561 595 600 616 660 680 700 714 748 770 816 825 840 850 880 924 935 952 1020 1050 1100 1122 1155 1190 1200 1232 1275 1309 1320 1360 1400 1428 1496 1540 1650 1680 1700 1785 1848 1870 1904 1925 2040 2100 2200 2244 2310 2380 2550 2618 2640 2800 2805 2856 2975 2992 3080 3300 3400 3570 3696 3740 3850 3927 4080 4200 4400 4488 4620 4675 4760 5100 5236 5610 5712 5775 5950 6160 6545 6600 6800 7140 7480 7700 7854 8400 8925 8976 9240 9350 9520 10200 10472 11220 11550 11900 13090 13200 13421 14025 14280 14960 15400 15708 17850 18480 18700 19635 20400 20944 22440 23100 23800 26180 26842 28050 28560 30800 31416 32725 35700 37400 39270 40263 44880 46200 47600 52360 53684 56100 62832 65450 67105 71400 74800 78540 80526 92400 93947 98175 104720 107368 112200 130900 134210 142800 147631 157080 161052 187894 196350 201315 214736 224400 228157 261800 268420 281841 295262 314160 322104 335525 375788 392700 402630 442893 456314 469735 523600 536840 563682 590524 644208 671050 684471 738155 751576 785400 805260 885786 912628 939470 1006575 1033417 1073680 1127364 1140785 1181048 1342100 1368942 1409205 1476310 1503152 1570800 1597099 1610520 1771572 1825256 1878940 2013150 2066834 2214465 2254728 2281570 2348675 2362096 2509727 2684200 2737884 2818410 2952620 3100251 3194198 3221040 3422355 3543144 3650512 3690775 3757880 4026300 4133668 4428930 4509456 4563140 4697350 4791297 5019454 5167085 5368400 5475768 5636820 5703925 5905240 6200502 6388396 6844710 7046025 7086288 7381550 7515760 7529181 7985495 8052600 8267336 8857860 9126280 9394700 9582594 10038908 10334170 10951536 11072325 11273640 11407850 11810480 12401004 12548635 12776792 13689420 14092050 14763100 15058362 15501255 15970990 16105200 16534672 17111775 17568089 17715720 18252560 18789400 19165188 20077816 20668340 22144650 22547280 22815700 23956485 24802008 25097270 25553584 25835425 27378840 28184100 29526200 30116724 31002510 31941980 34223550 35136178 35431440 37578800 37645905 38330376 39927475 40155632 41336680 44289300 45631400 47912970 49604016 50194540 51670850 52704267 54757680 56368200 59052400 60233448 62005020 62743175 63883960 68447100 70272356 75291810 76660752 77506275 79854950 82673360 87840445 88578600 91262800 95825940 100389080 103341700 105408534 112736400 119782425 120466896 124010040 125486350 127767920 136894200 140544712 150583620 155012550 159709900 175680890 177157200 188229525 191651880 200778160 206683400 210817068 239564850 248020080 250972700 263521335 273788400 281089424 301167240 310025100 319419800 351361780 376459050 383303760 413366800 421634136 439202225 479129700 501945400 527042670 602334480 620050200 638839600 702723560 752918100 843268272 878404450 958259400 1003890800 1054085340 1240100400 1317606675 1405447120 1505836200 1756808900 1916518800 2108170680 2635213350 3011672400 3513617800 4216341360 5270426700 7027235600 10540853400 21081706800
• Sum of all divisors σ(n): 89154722304
• Sum of proper divisors (its aliquot sum) s(n): 68073015504
• 21081706800 is an abundant number, because the sum of its proper divisors (68073015504) is greater than itself. Its abundance is 46991308704

Bases of 21081706800

• Binary: 10011101000100100010101000100110000₂
• Hexadecimal: 0x4E8915130
• Base-36: 9ONI52O

Squares and roots of 21081706800

• 21081706800 squared (21081706800²) is 444438361601166240000
• 21081706800 cubed (21081706800³) is 9369519229948165209738432000000
• The square root of 21081706800 is 145195.4090183295
• The cube root of 21081706800 is 2762.4976865047

Scales and comparisons

• 21,081,706,800 seconds is equal to 670 years, 17 weeks, 2 days, 5 hours, 40 minutes.
• To count from 1 to 21,081,706,800 would take you about one thousand, three hundred forty 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 21081706800 cubic inches would be around 230.2 feet tall.

Recreational maths with 21081706800

• 21081706800 backwards is 00860718012
• 21081706800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21081706800's digits is 33
• More coming soon!