21947502720

Names of 21947502720

• Cardinal: 21947502720 can be written as Twenty-one billion, nine hundred forty-seven million, five hundred two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.194750272 × 10¹⁰

Factors of 21947502720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 77

Divisors of 21947502720

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 13 15 16 20 22 24 26 30 32 33 39 40 43 44 48 52 55 60 64 65 66 78 80 86 88 96 104 110 120 121 128 129 130 132 143 156 160 165 169 172 176 192 195 208 215 220 240 242 258 260 264 286 312 320 330 338 344 352 363 384 390 416 429 430 440 473 480 484 507 516 520 528 559 572 605 624 640 645 660 676 688 704 715 726 780 832 845 858 860 880 946 960 968 1014 1032 1040 1056 1118 1144 1210 1248 1290 1320 1352 1376 1408 1419 1430 1452 1560 1573 1664 1677 1690 1716 1720 1760 1815 1859 1892 1920 1936 2028 2064 2080 2112 2145 2197 2236 2288 2365 2420 2496 2535 2580 2640 2704 2752 2795 2838 2860 2904 3120 3146 3354 3380 3432 3440 3520 3630 3718 3784 3872 4056 4128 4160 4224 4290 4394 4472 4576 4719 4730 4840 4992 5070 5160 5203 5280 5408 5504 5577 5590 5676 5720 5808 6149 6240 6292 6591 6708 6760 6864 6880 7040 7095 7260 7267 7436 7568 7744 7865 8112 8256 8320 8385 8580 8788 8944 9152 9295 9438 9460 9680 10140 10320 10406 10560 10816 10985 11154 11180 11352 11440 11616 12298 12480 12584 13182 13416 13520 13728 13760 14190 14520 14534 14872 15136 15488 15609 15730 16224 16512 16770 17160 17576 17888 18304 18447 18590 18876 18920 19360 20280 20449 20640 20812 21120 21632 21801 21970 22308 22360 22704 22880 23232 23595 24167 24596 24960 25168 26015 26364 26832 27040 27456 27520 27885 28380 29040 29068 29744 30272 30745 31218 31460 32448 32955 33540 34320 35152 35776 36335 36894 37180 37752 37840 38720 40560 40898 41280 41624 43602 43940 44616 44720 45408 45760 46464 47190 48334 49192 50336 52030 52728 53664 54080 54912 55770 56760 58080 58136 59488 60544 61347 61490 62436 62920 64896 65910 67080 67639 68640 70304 71552 72501 72670 73788 74360 75504 75680 77440 78045 79937 81120 81796 82560 83248 87204 87880 89232 89440 90816 91520 92235 94380 94471 96668 98384 100672 102245 104060 105456 107328 108160 109005 111540 113520 116160 116272 118976 120835 122694 122980 124872 125840 131820 134160 135278 137280 140608 145002 145340 147576 148720 151008 151360 156090 159874 162240 163592 166496 174408 175760 178464 178880 181632 184470 188760 188942 193336 196768 201344 202917 204490 208120 210912 214656 218010 223080 227040 232320 232544 237952 239811 241670 245388 245960 249744 251680 263640 265837 268320 270556 274560 281216 283413 290004 290680 295152 297440 302016 302720 306735 312180 319748 324480 327184 332992 338195 348816 351520 356928 357760 362505 368940 377520 377884 386672 393536 399685 405834 408980 416240 421824 436020 446160 454080 465088 472355 479622 483340 490776 491920 499488 503360 527280 531674 536640 541112 566826 580008 581360 590304 594880 604032 613470 624360 639496 654368 665984 676390 697632 703040 713856 725010 737880 755040 755768 773344 787072 797511 799370 811668 817960 832480 843648 872040 879307 892320 908160 930176 944710 959244 966680 981552 983840 998976 1006720 1014585 1039181 1054560 1063348 1073280 1082224 1133652 1160016 1162720 1180608 1189760 1199055 1226940 1248720 1278992 1308736 1329185 1352780 1395264 1406080 1417065 1450020 1475760 1510080 1511536 1546688 1595022 1598740 1623336 1635920 1664960 1744080 1758614 1784640 1889420 1918488 1933360 1963104 1967680 1997952 2029170 2078362 2109120 2126696 2164448 2267304 2320032 2325440 2361216 2398110 2453880 2497440 2557984 2617472 2637921 2658370 2705560 2790528 2834130 2900040 2951520 3020160 3023072 3093376 3117543 3190044 3197480 3246672 3271840 3329920 3488160 3517228 3569280 3778840 3836976 3866720 3926208 3935360 3987555 4058340 4156724 4218240 4253392 4328896 4396535 4534608 4640064 4650880 4796220 4907760 4994880 5115968 5195905 5275842 5316740 5411120 5668260 5800080 5903040 6046144 6235086 6380088 6394960 6493344 6543680 6976320 7034456 7557680 7673952 7733440 7852416 7975110 8116680 8313448 8506784 8657792 8793070 9069216 9280128 9592440 9815520 9989760 10231936 10391810 10551684 10633480 10822240 11336520 11430991 11600160 11806080 12092288 12470172 12760176 12789920 12986688 13087360 13189605 13952640 14068912 15115360 15347904 15466880 15587715 15950220 16233360 16626896 17013568 17586140 18138432 19184880 19631040 20783620 21103368 21266960 21644480 22673040 22861982 23200320 24940344 25520352 25579840 25973376 26379210 28137824 30230720 30695808 31175430 31900440 32466720 33253792 34027136 34292973 35172280 36276864 38369760 39262080 41567240 42206736 42533920 43288960 45346080 45723964 46400640 49880688 51040704 51159680 52758420 56275648 57154955 60461440 62350860 63800880 64933440 66507584 68585946 70344560 76739520 83134480 84413472 85067840 90692160 91447928 99761376 102081408 105516840 112551296 114309910 124701720 127601760 129866880 133015168 137171892 140689120 153479040 166268960 168826944 170135680 171464865 181384320 182895856 199522752 211033680 228619820 249403440 255203520 274343784 281378240 332537920 337653888 342929730 365791712 399045504 422067360 457239640 498806880 510407040 548687568 562756480 665075840 685859460 731583424 844134720 914479280 997613760 1097375136 1371718920 1463166848 1688269440 1828958560 1995227520 2194750272 2743437840 3657917120 4389500544 5486875680 7315834240 10973751360 21947502720
• Sum of all divisors σ(n): 85237891200
• Sum of proper divisors (its aliquot sum) s(n): 63290388480
• 21947502720 is an abundant number, because the sum of its proper divisors (63290388480) is greater than itself. Its abundance is 41342885760

Bases of 21947502720

• Binary: 10100011100001011000101000010000000₂
• Hexadecimal: 0x51C2C5080
• Base-36: A2YZ5HC

Squares and roots of 21947502720

• 21947502720 squared (21947502720²) is 481692875644407398400
• 21947502720 cubed (21947502720³) is 10571955698410253129172123648000
• The square root of 21947502720 is 148146.8957487803
• The cube root of 21947502720 is 2799.8087760565

Scales and comparisons

• 21,947,502,720 seconds is equal to 697 years, 44 weeks, 6 days, 32 minutes.
• To count from 1 to 21,947,502,720 would take you about one thousand, three hundred ninety-five 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 21947502720 cubic inches would be around 233.3 feet tall.

Recreational maths with 21947502720

• 21947502720 backwards is 02720574912
• 21947502720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21947502720's digits is 39
• More coming soon!