1221668438428620

Names of 1221668438428620

• Cardinal: 1221668438428620 can be written as One quadrillion, two hundred twenty-one trillion, six hundred sixty-eight billion, four hundred thirty-eight million, four hundred twenty-eight thousand, six hundred twenty.

Scientific notation

• Scientific notation: 1.22166843842862 × 10¹⁵

Factors of 1221668438428620

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 15058290

Divisors of 1221668438428620

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 27 28 30 35 36 39 42 45 52 54 60 63 65 70 78 84 90 91 105 108 117 126 127 130 135 140 156 169 180 182 189 195 210 234 252 254 260 270 273 315 338 351 364 378 381 390 420 455 468 507 508 540 546 585 630 635 676 702 756 762 780 819 845 889 910 945 1014 1092 1143 1170 1183 1260 1270 1365 1404 1521 1524 1638 1651 1690 1755 1778 1820 1890 1905 2028 2286 2340 2366 2457 2535 2540 2667 2730 3042 3276 3302 3380 3429 3510 3549 3556 3780 3810 4095 4445 4563 4572 4732 4914 4953 5070 5334 5460 5715 5915 6084 6604 6858 7020 7098 7605 7620 8001 8190 8255 8890 9126 9828 9906 10140 10647 10668 11430 11557 11830 12285 13335 13716 14196 14859 15210 16002 16380 16510 17145 17745 17780 18252 19812 21294 21463 22815 22860 23114 23660 24003 24570 24765 26670 29718 30420 31941 32004 33020 34290 34671 35490 40005 42588 42926 44577 45630 46228 48006 49140 49530 53235 53340 57785 59436 63882 64389 68580 69342 70980 74295 80010 85852 89154 91260 96012 99060 104013 106470 107315 115570 120015 127764 128778 138684 148590 150241 159705 160020 173355 178308 193167 208026 212940 214630 222885 231140 240030 257556 297180 300482 312039 319410 321945 346710 386334 416052 429260 445770 450723 480060 520065 579501 600964 624078 638820 643890 693420 751205 772668 891540 901446 965835 1040130 1159002 1248156 1287780 1352169 1502410 1560195 1802892 1931670 2080260 2253615 2318004 2704338 2897505 3004820 3120390 3863340 4056507 4507230 5408676 5795010 6240780 6760845 8113014 9014460 11590020 13521690 15058133 16226028 20282535 27043380 30116266 40565070 45174399 60232532 75290665 81130140 90348798 105406931 135523197 150581330 180697596 195755729 210813862 225871995 271046394 301162660 316220793 391511458 406569591 421627724 451743990 527034655 542092788 587267187 632441586 677615985 783022916 813139182 903487980 948662379 978778645 1054069310 1174534374 1264883172 1355231970 1370290103 1581103965 1626278364 1761801561 1897324758 1912382891 1957557290 2032847955 2108138620 2349068748 2544824477 2710463940 2740580206 2845987137 2936335935 3162207930 3523603122 3794649516 3824765782 3915114580 4065695910 4110870309 4743311895 5089648954 5285404683 5481160412 5691974274 5737148673 5872671870 6324415860 6851450515 7047206244 7634473431 7649531564 8131391820 8221740618 8809007805 9486623790 9561914455 10179297908 10570809366 11383948548 11474297346 11745343740 12332610927 12724122385 13386680237 13702901030 14229935685 15268946862 16443481236 17211446019 17618015610 17813771339 18973247580 19123828910 20554351545 21141618732 22903420293 22948594692 24665221854 24860977583 25448244770 26427023415 26773360474 27405802060 28459871370 28685743365 30537893724 34422892038 35236031220 35627542678 36997832781 38172367155 38247657820 40160040711 41108703090 45806840586 49330443708 49721955166 50896489540 51634338057 52854046830 53441314017 53546720948 56919742740 57371486730 61663054635 66933401185 68710260879 68845784076 71255085356 73995665562 74582932749 76344734310 80320081422 82217406180 86057230095 89068856695 91613681172 99443910332 103268676114 105708093660 106882628034 114517101465 114742973460 120480122133 123326109270 124304887915 133866802370 137420521758 147991331124 149165865498 152689468620 160323942051 160640162844 172114460190 174026843081 178137713390 184989163905 200800203555 206537352228 213765256068 223748798247 229034202930 240960244266 246652218540 248609775830 258171690285 267206570085 267733604740 274841043516 298331730996 320647884102 323192708579 343551304395 344228920380 348053686162 356275426780 361440366399 369978327810 372914663745 401600407110 447497596494 458068405860 480971826153 481920488532 497219551660 516343380570 522080529243 534413140170 602400610665 641295768204 646385417158 671246394741 687102608790 696107372324 722880732798 739956655620 745829327490 801619710255 803200814220 870134215405 894995192988 961943652306 969578125737 1032686761140 1044161058486 1068826280340 1118743991235 1204801221330 1292770834316 1342492789482 1374205217580 1445761465596 1491658654980 1566241587729 1603239420510 1615963542895 1740268430810 1807201831995 1923887304612 1939156251474 2088322116972 2237487982470 2262348960053 2404859130765 2409602442660 2610402646215 2684985578964 2908734377211 3132483175458 3206478841020 3231927085790 3356231973705 3480536861620 3614403663990 3878312502948 4474975964940 4524697920106 4698724763187 4809718261530 4847890628685 5220805292430 5817468754422 6264966350916 6463854171580 6712463947410 6787046880159 7228807327980 7831207938645 8726203131633 9049395840212 9397449526374 9619436523060 9695781257370 10441610584860 11311744800265 11634937508844 13424927894820 13574093760318 14543671886055 15662415877290 17452406263266 18794899052748 19391562514740 20361140640477 22623489600530 23493623815935 27148187520636 29087343772110 31324831754580 33935234400795 34904812526532 40722281280954 43631015658165 45246979201060 46987247631870 58174687544220 61083421921431 67870468801590 81444562561908 87262031316330 93974495263740 101805703202385 122166843842862 135740937603180 174524062632660 203611406404770 244333687685724 305417109607155 407222812809540 610834219214310 1221668438428620
• Sum of all divisors σ(n): 4740580062167040
• Sum of proper divisors (its aliquot sum) s(n): 3518911623738420
• 1221668438428620 is an abundant number, because the sum of its proper divisors (3518911623738420) is greater than itself. Its abundance is 2297243185309800

Bases of 1221668438428620

• Binary: 100010101110001100111011001010011100100101111001100₂
• Hexadecimal: 0x45719D94E4BCC
• Base-36: C11MQDP230

Squares and roots of 1221668438428620

• 1221668438428620 squared (1221668438428620²) is 1492473773452622895974835104400
• 1221668438428620 cubed (1221668438428620³) is 1823308104209535789105876514972648749647928000
• The square root of 1221668438428620 is 34952373.8597054377
• The cube root of 1221668438428620 is 106901.6605555697

Scales and comparisons

• 1,221,668,438,428,620 seconds is equal to 38,845,277 years, 24 weeks, 4 days, 7 hours, 57 minutes.
• To count from 1 to 1,221,668,438,428,620 would take you about one hundred sixteen million, five hundred thirty-five thousand, eight hundred thirty-two 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 1221668438428620 cubic inches would be around 8908.5 feet tall.

Recreational maths with 1221668438428620

• 1221668438428620 backwards is 0268248348661221
• 1221668438428620 is a Harshad number.
• The number of decimal digits it has is: 16
• The sum of 1221668438428620's digits is 63
• More coming soon!