21209420177920

Names of 21209420177920

• Cardinal: 21209420177920 can be written as Twenty-one trillion, two hundred nine billion, four hundred twenty million, one hundred seventy-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.120942017792 × 10¹³

Factors of 21209420177920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 8827

Divisors of 21209420177920

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 29 32 40 52 58 64 65 80 104 116 128 130 145 160 169 197 208 232 256 260 290 320 338 377 394 416 464 512 520 580 640 676 754 788 832 845 928 985 1040 1160 1280 1352 1508 1576 1664 1690 1856 1885 1970 2080 2320 2560 2561 2704 3016 3152 3328 3380 3712 3770 3940 4160 4640 4901 5122 5408 5713 6032 6304 6656 6760 7424 7540 7880 8320 8581 9280 9802 10244 10816 11426 12064 12608 12805 13520 14848 15080 15760 16640 17162 18560 19604 20488 21632 22852 24128 24505 25216 25610 27040 28565 30160 31520 33280 33293 34324 37120 39208 40976 42905 43264 45704 48256 49010 50432 51220 54080 57130 60320 63040 66586 68648 74240 74269 78416 81952 85810 86528 91408 96512 98020 100864 102440 108160 111553 114260 120640 126080 133172 137296 148538 156832 163904 166465 171620 182816 193024 196040 204880 216320 223106 228520 241280 248849 252160 266344 274592 297076 313664 327808 332930 343240 365632 371345 392080 409760 432640 446212 457040 482560 497698 504320 532688 549184 557765 594152 627328 655616 665860 686480 731264 742690 784160 819520 892424 914080 965120 965497 995396 1065376 1098368 1115530 1188304 1244245 1254656 1311232 1331720 1372960 1450189 1462528 1485380 1568320 1639040 1690457 1784848 1828160 1930994 1990792 2130752 2196736 2231060 2376608 2488490 2509312 2663440 2745920 2900378 2925056 2970760 3136640 3235037 3278080 3380914 3569696 3656320 3861988 3981584 4261504 4393472 4462120 4753216 4827485 4976980 5326880 5491840 5800756 5941520 6273280 6470074 6556160 6761828 7139392 7250945 7312640 7723976 7963168 8452285 8523008 8924240 9506432 9654970 9953960 10653760 10983680 11601512 11883040 12546560 12940148 13523656 14278784 14501890 14625280 15447952 15926336 16175185 16904570 17046016 17848480 19012864 19309940 19907920 21307520 21967360 21975941 23203024 23766080 25880296 27047312 28557568 29003780 30895904 31852672 32350370 33809140 35696960 38025728 38619880 39815840 42055481 42615040 43951882 46406048 47532160 49023253 51760592 54094624 57115136 58007560 61791808 63705344 64700740 67618280 71393920 77239760 79631680 84110962 85230080 87903764 92812096 95064320 98046506 103521184 108189248 109879705 116015120 123583616 127410688 129401480 135236560 142787840 154479520 159263360 168221924 175807528 185624192 190128640 196093012 207042368 210277405 216378496 219759410 232030240 245116265 247167232 258802960 270473120 285575680 285687233 308959040 318526720 336443848 351615056 371248384 392186024 414084736 420554810 432756992 439518820 464060480 490232530 494334464 517605920 540946240 571374466 617918080 637053440 637302289 672887696 703230112 742496768 784372048 828169472 841109620 865513984 879037640 928120960 980465060 1035211840 1081892480 1142748932 1235836160 1274604578 1345775392 1406460224 1428436165 1568744096 1656338944 1682219240 1758075280 1856241920 1960930120 2070423680 2163784960 2285497864 2471672320 2549209156 2691550784 2812920448 2856872330 3137488192 3186511445 3364438480 3516150560 3712483840 3921860240 4140847360 4327569920 4570995728 5098418312 5383101568 5625840896 5713744660 6274976384 6373022890 6728876960 7032301120 7843720480 8281694720 8284929757 9141991456 10196836624 10766203136 11251681792 11427489320 12549952768 12746045780 13457753920 14064602240 15687440960 16569859514 18283982912 20393673248 21532406272 22854978640 25099905536 25492091560 26915507840 28129204480 31374881920 33139719028 36567965824 40787346496 41424648785 45709957280 50984183120 53831015680 56258408960 62749763840 66279438056 73135931648 81574692992 82849297570 91419914560 101968366240 107662031360 125499527680 132558876112 146271863296 163149385984 165698595140 182839829120 203936732480 265117752224 326298771968 331397190280 365679658240 407873464960 530235504448 662794380560 731359316480 815746929920 1060471008896 1325588761120 1631493859840 2120942017792 2651177522240 4241884035584 5302355044480 10604710088960 21209420177920
• Sum of all divisors σ(n): 57260209018320
• Sum of proper divisors (its aliquot sum) s(n): 36050788840400
• 21209420177920 is an abundant number, because the sum of its proper divisors (36050788840400) is greater than itself. Its abundance is 14841368662480

Bases of 21209420177920

• Binary: 100110100101000110011111101001010001000000000₂
• Hexadecimal: 0x134A33F4A200
• Base-36: 7INH15V5S

Squares and roots of 21209420177920

• 21209420177920 squared (21209420177920²) is 449839504283560044455526400
• 21209420177920 cubed (21209420177920³) is 9540835058977268680206933848215257088000
• The square root of 21209420177920 is 4605368.6256281375
• The cube root of 21209420177920 is 27680.6488058911

Scales and comparisons

• 21,209,420,177,920 seconds is equal to 674,393 years, 49 weeks, 5 days, 4 hours, 58 minutes, 40 seconds.
• To count from 1 to 21,209,420,177,920 would take you about one million, six hundred eighty-five thousand, nine hundred eighty-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 21209420177920 cubic inches would be around 2306.7 feet tall.

Recreational maths with 21209420177920

• 21209420177920 backwards is 02977102490212
• The number of decimal digits it has is: 14
• The sum of 21209420177920's digits is 46
• More coming soon!