20981365440

Names of 20981365440

• Cardinal: 20981365440 can be written as Twenty billion, nine hundred eighty-one million, three hundred sixty-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.098136544 × 10¹⁰

Factors of 20981365440

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 251

Divisors of 20981365440

• Number of divisors d(n): 896
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 23 24 28 29 30 31 32 35 40 42 46 48 56 58 60 62 64 69 70 80 84 87 92 93 96 105 112 115 116 120 124 138 140 145 151 155 160 161 168 174 184 186 192 203 210 217 224 230 232 240 248 276 280 290 302 310 320 322 336 345 348 368 372 406 420 434 435 448 453 460 464 465 480 483 496 552 560 580 604 609 620 644 651 667 672 690 696 713 736 744 755 805 812 840 868 870 899 906 920 928 930 960 966 992 1015 1057 1085 1104 1120 1160 1208 1218 1240 1288 1302 1334 1344 1380 1392 1426 1472 1488 1510 1610 1624 1680 1736 1740 1798 1812 1840 1856 1860 1932 1984 2001 2030 2114 2139 2170 2208 2240 2265 2320 2415 2416 2436 2480 2576 2604 2668 2697 2760 2784 2852 2976 3020 3045 3171 3220 3248 3255 3335 3360 3472 3473 3480 3565 3596 3624 3680 3720 3864 4002 4060 4228 4278 4340 4379 4416 4495 4530 4640 4669 4681 4830 4832 4872 4960 4991 5152 5208 5285 5336 5394 5520 5568 5704 5952 6040 6090 6293 6342 6440 6496 6510 6670 6720 6944 6946 6960 7130 7192 7248 7360 7440 7728 8004 8120 8456 8556 8680 8758 8990 9060 9280 9338 9362 9660 9664 9744 9920 9982 10005 10304 10416 10419 10570 10672 10695 10788 11040 11408 12080 12180 12586 12684 12880 12992 13020 13137 13340 13485 13888 13892 13920 14007 14043 14260 14384 14496 14880 14973 15456 15855 16008 16240 16912 17112 17360 17365 17516 17980 18120 18676 18724 18879 19320 19488 19964 20010 20677 20832 20838 21140 21344 21390 21576 21895 22080 22816 23345 23405 24160 24311 24360 24955 25172 25368 25760 26040 26274 26680 26970 27784 27840 28014 28086 28520 28768 28992 29760 29946 30653 30912 31465 31710 32016 32480 32767 33824 34224 34720 34730 35032 35960 36240 37352 37448 37758 38640 38976 39928 40020 41354 41664 41676 42280 42688 42780 43152 43790 45632 46690 46810 48320 48622 48720 49910 50344 50736 51520 52080 52095 52548 53360 53940 55568 56028 56172 57040 57536 59892 61306 62031 62930 63420 64032 64960 65534 65685 67648 68448 69440 69460 70035 70064 70215 71920 72480 72933 74704 74865 74896 75516 77280 79856 80040 82708 83352 84560 85560 86304 87580 91959 93380 93620 94395 97244 97440 98301 99820 100688 100717 101472 103385 104160 104190 105096 106720 107663 107880 111136 112056 112344 114080 119784 121555 122612 124062 125860 126840 128064 131068 131370 135749 136896 138920 140070 140128 140430 143840 144739 144960 145866 149408 149730 149792 151032 153265 154560 159712 160080 163835 165416 166704 169120 171120 172608 175160 183918 186760 187240 188790 194488 194880 196602 199640 201376 201434 202944 206770 208320 208380 210192 213440 215326 215760 222272 224112 224688 228160 239568 243110 245224 248124 251720 253680 262136 262740 271498 277840 280140 280256 280860 287680 289478 291732 298816 299460 299584 302064 302151 306530 310155 319424 320160 322989 327670 330832 333408 338240 342240 350320 364665 367836 373520 374480 377580 388976 393204 399280 402752 402868 407247 413540 416760 420384 430652 431520 434217 448224 449376 459795 479136 486220 490448 491505 496248 503440 503585 507360 524272 525480 538315 542996 555680 560280 561720 578956 583464 598920 604128 604302 613060 620310 640320 645978 655340 661664 666816 678745 684480 700640 705019 723695 729330 735672 747040 748960 753641 755160 777952 786408 798560 805736 814494 827080 833520 840768 861304 863040 868434 896448 898752 919590 950243 958272 972440 980896 983010 992496 1006880 1007170 1014720 1048544 1050960 1076630 1085992 1111360 1120560 1123440 1157912 1166928 1197840 1208256 1208604 1226120 1240620 1291956 1310680 1323328 1357490 1401280 1410038 1447390 1458660 1471344 1494080 1497920 1507282 1510320 1510755 1555904 1572816 1597120 1611472 1614945 1628988 1654160 1667040 1722608 1736868 1839180 1900486 1944880 1961792 1966020 1984992 2013760 2014340 2036235 2097088 2101920 2115057 2153260 2171085 2171984 2241120 2246880 2260923 2315824 2333856 2395680 2417208 2452240 2481240 2583912 2621360 2714980 2820076 2850729 2894780 2917320 2942688 3014564 3020640 3021510 3122227 3145632 3222944 3229890 3257976 3308320 3334080 3445216 3473736 3525095 3678360 3768205 3800972 3889760 3932040 3969984 4028680 4072470 4203840 4230114 4306520 4342170 4343968 4482240 4493760 4521846 4631648 4667712 4751215 4791360 4834416 4904480 4962480 5167824 5242720 5429960 5640152 5701458 5789560 5834640 5885376 6029128 6041280 6043020 6244454 6291264 6445888 6459780 6515952 6616640 6890432 6947472 7050190 7356720 7536410 7601944 7779520 7864080 8057360 8144940 8460228 8613040 8684340 8687936 9043692 9263296 9366681 9502430 9668832 9808960 9924960 10335648 10485440 10575285 10859920 11280304 11304615 11402916 11579120 11669280 12058256 12086040 12488908 12919560 13031904 13894944 14100380 14253645 14713440 15072820 15203888 15611135 15728160 16114720 16289880 16920456 17226080 17368680 18087384 18733362 19004860 19337664 19849920 20671296 21150570 21719840 21855589 22560608 22609230 22805832 23158240 23338560 24116512 24172080 24977816 25839120 26063808 27789888 28200760 28507290 29426880 30145640 30407776 31222270 31456320 32229440 32579760 33840912 34452160 34737360 36174768 37466724 38009720 42301140 43439680 43711178 45121216 45218460 45611664 46316480 46833405 48233024 48344160 49955632 51678240 56401520 57014580 60291280 60815552 62444540 65159520 65566767 67681824 69474720 72349536 74933448 76019440 84602280 87422356 90436920 91223328 93666810 96688320 99911264 103356480 109277945 112803040 114029160 120582560 124889080 130319040 131133534 135363648 138949440 144699072 149866896 152038880 169204560 174844712 180873840 182446656 187333620 199822528 218555890 225606080 228058320 241165120 249778160 262267068 299733792 304077760 327833835 338409120 349689424 361747680 374667240 437111780 456116640 499556320 524534136 599467584 655667670 676818240 699378848 723495360 749334480 874223560 912233280 999112640 1049068272 1311335340 1398757696 1498668960 1748447120 2098136544 2622670680 2997337920 3496894240 4196273088 5245341360 6993788480 10490682720 20981365440
• Sum of all divisors σ(n): 85394718720
• Sum of proper divisors (its aliquot sum) s(n): 64413353280
• 20981365440 is an abundant number, because the sum of its proper divisors (64413353280) is greater than itself. Its abundance is 43431987840

Bases of 20981365440

• Binary: 10011100010100101100011101011000000₂
• Hexadecimal: 0x4E2963AC0
• Base-36: 9MZRH6O

Squares and roots of 20981365440

• 20981365440 squared (20981365440²) is 440217695726826393600
• 20981365440 cubed (20981365440³) is 9236368347199270975558877184000
• The square root of 20981365440 is 144849.4578519367
• The cube root of 20981365440 is 2758.1078818987

Scales and comparisons

• 20,981,365,440 seconds is equal to 667 years, 7 weeks, 2 days, 21 hours, 4 minutes.
• To count from 1 to 20,981,365,440 would take you about one thousand, three hundred thirty-four 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 20981365440 cubic inches would be around 229.8 feet tall.

Recreational maths with 20981365440

• 20981365440 backwards is 04456318902
• 20981365440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20981365440's digits is 42
• More coming soon!