21720313125720

Names of 21720313125720

• Cardinal: 21720313125720 can be written as Twenty-one trillion, seven hundred twenty billion, three hundred thirteen million, one hundred twenty-five thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.172031312572 × 10¹³

Factors of 21720313125720

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5345

Divisors of 21720313125720

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 29 30 31 33 36 40 44 45 55 58 60 62 66 72 87 88 90 93 99 110 116 120 124 132 145 155 165 174 180 186 198 220 232 248 261 264 279 290 310 319 330 341 348 360 372 396 435 440 465 495 522 558 580 620 638 660 682 696 744 792 870 899 930 957 990 1023 1044 1116 1160 1240 1276 1305 1320 1364 1395 1595 1705 1723 1740 1798 1860 1914 1980 2046 2088 2232 2552 2610 2697 2728 2790 2871 3069 3190 3410 3446 3480 3541 3596 3720 3828 3960 4092 4495 4785 5115 5169 5220 5394 5580 5742 6138 6380 6820 6892 7082 7192 7656 8091 8184 8615 8990 9570 9889 10230 10338 10440 10623 10788 11160 11484 12276 12760 13485 13640 13784 14164 14355 15345 15507 16182 17230 17705 17980 18953 19140 19778 20460 20676 21246 21576 22968 24552 25845 26970 28328 28710 29667 30690 31014 31869 32364 34460 35410 35960 37906 38280 38951 39556 40455 40920 41352 42492 49445 49967 51690 53115 53413 53940 56859 57420 59334 61380 62028 63738 64728 68920 70820 75812 77535 77902 79112 80910 84984 89001 94765 98890 99934 102689 103380 106230 106826 107880 109771 113718 114840 116853 118668 122760 124056 127476 141640 148335 149901 151624 155070 155804 159345 160239 161820 170577 178002 189530 194755 197780 199868 205378 206760 212460 213652 219542 227436 233706 237336 249835 254952 267065 284295 296670 299802 308067 310140 311608 318690 320478 323640 329313 341154 350559 356004 379060 389510 395560 399736 410756 424920 427304 439084 445005 449703 454872 467412 480717 499670 513445 534130 548855 549637 568590 584265 587543 593340 599604 616134 620280 637380 640956 658626 682308 701118 712008 749505 758120 779020 801195 821512 852885 878168 890010 899406 924201 934824 961434 987939 999340 1026890 1068260 1097710 1099274 1129579 1137180 1168530 1175086 1186680 1199208 1207481 1232268 1274760 1281912 1317252 1364616 1402236 1499010 1540335 1548977 1558040 1602390 1646565 1648911 1705770 1752795 1762629 1780020 1798812 1848402 1922868 1975878 1998680 2053780 2136520 2195420 2198548 2248515 2259158 2274360 2337060 2350172 2403585 2414962 2464536 2634504 2748185 2804472 2937715 2998020 3080670 3097954 3183359 3204780 3293130 3297822 3388737 3411540 3505590 3525258 3560040 3597624 3622443 3696804 3845736 3951756 4107560 4390840 4397096 4497030 4518316 4621005 4646931 4674120 4700344 4807170 4829924 4939695 4946733 5287887 5496370 5647895 5875430 5996040 6037405 6101143 6161340 6195908 6366718 6409560 6586260 6595644 6777474 6823080 7011180 7050516 7244886 7393608 7744885 7903512 8244555 8813145 8994060 9036632 9242010 9293862 9550077 9614340 9659848 9879390 9893466 10166211 10575774 10867329 10992740 11295790 11750860 12074810 12202286 12322680 12391816 12733436 13172520 13191288 13554948 13940793 14022360 14101032 14489772 15489770 15916795 16489110 16943685 17038747 17626290 17988120 18112215 18303429 18484020 18587724 19100154 19228680 19758780 19786932 20332422 21151548 21734658 21985480 22591580 23234655 23501720 24149620 24404572 24733665 25466872 26439435 27109896 27881586 28650231 28979544 30505715 30979540 31833590 32978220 33887370 34077494 35016949 35252580 36224430 36606858 36968040 37175448 38200308 39517560 39573864 40664844 42303096 43469316 45183160 46469310 47750385 48299240 48809144 49467330 50831055 51116241 52878870 54336645 54910287 55763172 57300462 61011430 61959080 63667180 65956440 67112573 67774740 68154988 69703965 70033898 70505160 72448860 73213716 76400616 81329688 85193735 86938632 91517145 92938620 95500770 98934660 101662110 102232482 105050847 105757740 108673290 109820574 111526344 114600924 122022860 127334360 134225146 135549480 136309976 139407930 140067796 143251155 144897720 146427432 153348723 170387470 175084745 176933147 183034290 185877240 189135433 191001540 197869320 201337719 203324220 204464964 210101694 211515480 217346580 219641148 229201848 244045720 255581205 268450292 274551435 278815860 280135592 286502310 306697446 315152541 335562865 340774940 350169490 353866294 366068580 378270866 382003080 402675438 406648440 408929928 420203388 434693160 439282296 511162410 525254235 530799441 536900584 549102870 557631720 567406299 573004620 604013157 613394892 630305082 671125730 681549880 700338980 707732588 732137160 756541732 766743615 805350876 840406776 884665735 945677165 1006688595 1022324820 1050508470 1061598882 1098205740 1134812598 1146009240 1208026314 1226789784 1260610164 1342251460 1400677960 1415465176 1513083464 1533487230 1575762705 1592398323 1610701752 1702218897 1769331470 1891354330 1946264617 2013377190 2044649640 2080489763 2101016940 2123197764 2196411480 2269625196 2416052628 2521220328 2653997205 2684502920 2837031495 3020065785 3066974460 3151525410 3184796646 3404437794 3538662940 3782708660 3892529234 4026754380 4160979526 4202033880 4246395528 4539250392 4832105256 5307994410 5484927557 5674062990 5838793851 6040131570 6133948920 6241469289 6303050820 6369593292 6808875588 7077325880 7565417320 7785058468 7961991615 8053508760 8321959052 8511094485 9731323085 10402448815 10615988820 10969855114 11348125980 11677587702 12080263140 12482938578 12606101640 12739186584 13617751176 15570116936 15923983230 16454782671 16643918104 17022188970 17516381553 18724407867 19462646170 20804897630 21231977640 21939710228 22696251960 23355175404 24160526280 24965877156 27424637785 29193969255 31207346445 31847966460 32909565342 34044377940 35032763106 37448815734 38925292340 41609795260 43879420456 46710350808 49364348013 49931754312 54849275570 58387938510 60334203127 62414692890 63695932920 65819130684 68088755880 70065526212 74897631468 77850584680 82273913355 83219590520 87581907765 93622039335 98728696026 109698551140 116775877020 120668406254 124829385780 131638261368 140131052424 149795262936 164547826710 175163815530 181002609381 187244078670 197457392052 219397102280 233551754040 241336812508 246821740065 249658771560 301671015635 329095653420 350327631060 362005218762 374488157340 394914784104 482673625016 493643480130 543007828143 603342031270 658191306840 700655262120 724010437524 748976314680 905013046905 987286960260 1086015656286 1206684062540 1448020875048 1810026093810 1974573920520 2172031312572 2413368125080 2715039140715 3620052187620 4344062625144 5430078281430 7240104375240 10860156562860 21720313125720
• Sum of all divisors σ(n): 82304609587200
• Sum of proper divisors (its aliquot sum) s(n): 60584296461480
• 21720313125720 is an abundant number, because the sum of its proper divisors (60584296461480) is greater than itself. Its abundance is 38863983335760

Bases of 21720313125720

• Binary: 100111100000100100111100011000101101101011000₂
• Hexadecimal: 0x13C1278C5B58
• Base-36: 7P669MSM0

Squares and roots of 21720313125720

• 21720313125720 squared (21720313125720²) is 471772002279324516525518400
• 21720313125720 cubed (21720313125720³) is 10247035613454818054064610352847373248000
• The square root of 21720313125720 is 4660505.6727483983
• The cube root of 21720313125720 is 27901.1450760615

Scales and comparisons

• 21,720,313,125,720 seconds is equal to 690,638 years, 40 weeks, 1 day, 42 minutes.
• To count from 1 to 21,720,313,125,720 would take you about one million, seven hundred twenty-six thousand, five hundred ninety-six 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 21720313125720 cubic inches would be around 2325.1 feet tall.

Recreational maths with 21720313125720

• 21720313125720 backwards is 02752131302712
• 21720313125720 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21720313125720's digits is 36
• More coming soon!