28466846714592
28,466,846,714,592 is an even composite number composed of seven prime numbers multiplied together.
What does the number 28466846714592 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 2304 divisors.
28466846714592 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, three hundred four divisors.
Prime factorization of 28466846714592:
25 × 37 × 11 × 132 × 17 × 61 × 211
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 11 × 13 × 13 × 17 × 61 × 211)See below for interesting mathematical facts about the number 28466846714592 from the Numbermatics database.
Names of 28466846714592
- Cardinal: 28466846714592 can be written as Twenty-eight trillion, four hundred sixty-six billion, eight hundred forty-six million, seven hundred fourteen thousand, five hundred ninety-two.
Scientific notation
- Scientific notation: 2.8466846714592 × 1013
Factors of 28466846714592
Divisors of 28466846714592
- Number of divisors d(n): 2304
-
Complete list of divisors:
1 2 3 4 6 8 9 11 12 13 16 17 18 22 24 26 27 32 33 34 36 39 44 48 51 52 54 61 66 68 72 78 81 88 96 99 102 104 108 117 122 132 136 143 144 153 156 162 169 176 183 187 198 204 208 211 216 221 234 243 244 264 272 286 288 297 306 312 324 338 351 352 366 374 396 408 416 422 429 432 442 459 468 486 488 507 528 544 549 561 572 594 612 624 633 648 663 671 676 702 729 732 748 792 793 816 844 858 864 884 891 918 936 972 976 1014 1037 1053 1056 1098 1122 1144 1188 1224 1248 1266 1287 1296 1326 1342 1352 1377 1404 1458 1464 1496 1521 1584 1586 1632 1647 1683 1688 1716 1768 1782 1836 1859 1872 1899 1944 1952 1989 2013 2028 2074 2106 2187 2196 2244 2288 2321 2376 2379 2431 2448 2532 2574 2592 2652 2673 2684 2704 2743 2754 2808 2873 2916 2928 2992 3042 3111 3159 3168 3172 3294 3366 3376 3432 3536 3564 3587 3672 3718 3744 3798 3861 3888 3978 4026 4056 4131 4148 4212 4374 4392 4488 4563 4576 4642 4752 4758 4862 4896 4941 5049 5064 5148 5304 5346 5368 5408 5486 5508 5577 5616 5697 5746 5832 5856 5967 5984 6039 6084 6222 6318 6344 6588 6732 6752 6864 6963 7072 7128 7137 7174 7293 7344 7436 7596 7722 7776 7956 8019 8052 8112 8229 8262 8296 8424 8619 8723 8748 8784 8976 9126 9284 9333 9477 9504 9516 9724 9882 10098 10128 10296 10309 10608 10692 10736 10761 10972 11016 11154 11232 11394 11407 11492 11583 11664 11934 12078 12168 12393 12444 12636 12688 12871 13176 13464 13481 13689 13728 13926 14256 14274 14348 14586 14688 14823 14872 15147 15192 15444 15912 16038 16104 16224 16458 16524 16592 16731 16848 17091 17238 17446 17496 17568 17901 17952 18117 18252 18568 18666 18954 19032 19448 19764 20196 20256 20592 20618 20889 21216 21384 21411 21472 21522 21879 21944 22032 22308 22788 22814 22984 23166 23328 23868 24057 24156 24336 24687 24786 24888 25272 25376 25742 25857 26169 26352 26928 26962 27378 27852 27999 28431 28512 28548 28696 29172 29646 29744 30173 30294 30384 30888 30927 31603 31824 32076 32208 32283 32916 33048 33184 33462 33696 34182 34221 34476 34749 34892 34992 35659 35802 36234 36504 37136 37179 37332 37908 38064 38613 38896 39457 39528 40392 40443 41067 41184 41236 41778 42768 42822 43044 43758 43888 44064 44469 44616 45441 45576 45628 45968 46332 46631 47736 48114 48312 48672 49374 49572 49776 50193 50544 51273 51484 51714 52338 52704 53703 53856 53924 54351 54756 55704 55998 56862 57096 57392 58344 59292 59488 60346 60588 60768 61776 61854 62667 63206 63648 64152 64233 64416 64566 65637 65832 66096 66924 68364 68442 68952 69498 69784 69984 71318 71604 72468 73008 74061 74272 74358 74664 75816 76128 77226 77571 77792 78507 78914 79056 80784 80886 82134 82472 83556 83997 85536 85644 86088 87516 87776 88938 89232 90519 90882 91152 91256 91936 92664 92781 93262 94809 95472 96228 96624 96849 98748 99144 99552 100386 101088 102546 102663 102968 103428 104247 104676 106977 107406 107848 108702 109512 111408 111996 113399 113724 114192 114784 115839 116688 118371 118584 120692 121176 121329 123201 123552 123708 125334 126412 128304 128466 129132 131274 131664 132192 133407 133848 136323 136728 136884 137904 138996 139568 139893 141581 142636 143208 144936 146016 148122 148291 148716 149328 150579 151632 153819 154452 155142 157014 157828 158112 161109 161568 161772 163053 164268 164944 167112 167323 167994 171288 172176 175032 175253 177876 178464 181038 181764 182304 182512 185328 185562 186524 188001 189618 190944 192456 192699 193248 193698 196911 197496 198288 200772 205092 205326 205936 206856 208494 209352 213954 214812 215696 217404 218807 219024 222183 222816 223992 226798 227448 228384 231678 232713 233376 235521 236742 237168 241384 242352 242658 246402 247416 250668 251991 252824 256608 256932 258264 262548 263328 266814 267696 271557 272646 273456 273768 275808 277992 278343 279136 279786 283162 284427 285272 286416 289872 290547 296244 296582 297432 298656 301158 303264 307638 307989 308904 310284 312741 314028 315656 320931 322218 323544 326106 328536 329888 334224 334646 335988 340197 342576 344352 347517 350064 350506 355113 355752 362076 363528 363987 365024 369603 370656 371124 373048 376002 379236 384912 385398 387396 392249 393822 394992 396576 401544 408969 410184 410652 411872 413712 416988 418704 419679 424743 427908 429624 431392 434808 437614 438048 444366 444873 447984 451737 453596 454896 461457 463356 465426 471042 473484 474336 482768 483327 484704 485316 489159 492804 494832 501336 501969 503982 505648 512941 513864 516528 525096 525759 533628 535392 543114 545292 546912 547536 555984 556686 559572 564003 566324 568854 570544 572832 578097 579744 581094 590733 592488 593164 594864 602316 606203 615276 615978 617808 620568 625482 628056 631312 641862 644436 647088 652212 656421 657072 666549 668448 669292 671976 680394 685152 695034 698139 700128 701012 706563 710226 711504 724152 727056 727974 739206 742248 746096 752004 755973 758472 769824 770796 774792 784498 787644 789984 803088 814671 817938 820368 821304 827424 833976 835029 837408 839358 849486 853281 855816 859248 869616 871641 875228 888732 889746 895968 903474 907192 909792 922914 923967 926712 930852 942084 946968 962793 965536 966654 970632 978318 985608 989664 1002672 1003938 1007964 1011296 1020591 1025882 1027728 1033056 1042551 1050192 1051518 1065339 1067256 1086228 1090584 1091961 1095072 1111968 1113372 1119144 1128006 1132648 1137708 1141088 1156194 1162188 1176747 1181466 1184976 1186328 1189728 1204632 1212406 1230552 1231956 1235616 1241136 1250964 1256112 1259037 1262624 1274229 1283724 1288872 1294176 1304424 1312842 1314144 1333098 1334619 1338584 1343952 1355211 1360788 1390068 1396278 1402024 1413126 1420452 1423008 1448304 1454112 1455948 1467477 1478412 1484496 1492192 1504008 1505907 1511946 1516944 1538823 1541592 1549584 1568996 1575288 1577277 1606176 1629342 1635876 1640736 1642608 1667952 1670058 1678716 1692009 1698972 1706562 1711632 1718496 1734291 1739232 1743282 1750456 1772199 1777464 1779492 1806948 1814384 1818609 1840553 1845828 1847934 1853424 1861704 1884168 1893936 1925586 1927783 1933308 1941264 1956636 1969263 1971216 1999647 2005344 2007876 2015928 2041182 2051764 2055456 2085102 2094417 2100384 2103036 2119689 2130678 2134512 2172456 2175199 2181168 2183922 2226744 2238288 2256012 2265296 2267919 2275416 2312388 2324376 2353494 2362932 2369952 2372656 2406877 2409264 2424812 2444013 2461104 2463912 2482272 2501928 2505087 2512224 2518074 2548458 2559843 2567448 2577744 2608848 2614923 2625684 2666196 2669238 2677168 2687904 2710422 2721576 2771901 2780136 2792556 2804048 2826252 2840904 2844491 2888379 2896608 2911896 2934954 2956824 2968992 3008016 3011814 3023892 3033888 3061773 3077646 3083184 3099168 3127653 3137992 3150576 3154554 3196017 3258684 3271752 3275883 3285216 3335904 3340116 3357432 3384018 3397944 3413124 3423264 3468582 3486564 3500912 3530241 3544398 3554928 3558984 3613896 3628768 3637218 3681106 3691656 3695868 3706848 3723408 3768336 3777111 3787872 3822687 3851172 3855566 3866616 3882528 3913272 3938526 3942432 3999294 4003857 4015752 4031856 4065633 4082364 4103528 4170204 4188834 4206072 4239378 4261356 4269024 4344912 4350398 4362336 4367844 4453488 4476576 4512024 4517721 4530592 4535838 4550832 4616469 4624776 4648752 4706988 4725864 4731831 4745312 4813754 4818528 4849624 4888026 4922208 4927824 5003856 5010174 5036148 5076027 5096916 5119686 5134896 5155488 5217696 5229846 5251368 5316597 5332392 5338476 5354336 5420844 5443152 5455827 5521659 5543802 5560272 5585112 5608096 5652504 5681808 5688982 5776758 5783349 5823792 5869908 5907789 5913648 5998941 6016032 6023628 6047784 6123546 6155292 6166368 6255306 6275984 6283251 6301152 6309108 6359067 6392034 6517368 6525597 6543504 6551766 6668233 6680232 6714864 6768036 6795888 6826248 6937164 6973128 7001824 7060482 7088796 7109856 7117968 7220631 7227792 7274436 7332039 7362212 7383312 7391736 7446816 7515261 7536672 7554222 7645374 7679529 7702344 7711132 7733232 7826544 7844769 7877052 7998588 8007714 8031504 8063712 8131266 8164728 8207056 8315703 8340408 8377668 8412144 8478756 8522712 8533473 8665137 8689824 8700796 8735688 8906976 9024048 9035442 9071676 9101664 9185319 9232938 9249552 9297504 9382959 9413976 9451728 9463662 9588051 9627508 9699248 9776052 9827649 9855648 10007712 10020348 10072296 10152054 10193832 10239372 10269792 10459692 10502736 10590723 10633194 10664784 10676952 10841688 10886304 10911654 11043318 11087604 11120544 11170224 11305008 11331333 11363616 11377964 11468061 11553516 11566698 11647584 11739816 11815578 11827296 11997882 12011571 12047256 12095568 12247092 12310584 12510612 12551968 12566502 12618216 12718134 12784068 13034736 13051194 13087008 13103532 13336466 13360464 13429728 13536072 13553163 13591776 13652496 13849407 13874328 13946256 14120964 14177592 14195493 14235936 14441262 14455584 14548872 14664078 14724424 14766624 14783472 15030522 15108444 15290748 15359058 15404688 15422264 15466464 15653088 15689538 15754104 15997176 16015428 16063008 16262532 16329456 16367481 16414112 16564977 16631406 16680816 16755336 16824288 16957512 17045424 17066946 17330274 17350047 17401592 17471376 17723367 18048096 18070884 18143352 18370638 18465876 18499104 18765918 18827952 18903456 18927324 19077201 19176102 19255016 19398496 19552104 19576791 19655298 20004699 20040696 20144592 20304108 20387664 20478744 20919384 21005472 21181446 21266388 21329568 21353904 21661893 21683376 21823308 21996117 22086636 22175208 22340448 22545783 22610016 22662666 22755928 22936122 23038587 23107032 23133396 23479632 23631156 23927189 23995764 24023142 24094512 24191136 24494184 24621168 24947109 25021224 25133004 25236432 25436268 25568136 25600419 25995411 26069472 26102388 26207064 26672932 26720928 27072144 27106326 27304992 27555957 27698814 27748656 27892512 28148877 28241928 28355184 28390986 28764153 28882524 29097744 29328156 29448848 29482947 29566944 30061044 30216888 30581496 30718116 30809376 30844528 31289401 31379076 31508208 31772169 31994352 32030856 32525064 32658912 32734962 33129954 33262812 33361632 33510672 33915024 33993999 34090848 34133892 34404183 34660548 34700094 34803184 34942752 35446734 36034713 36141768 36286704 36741276 36931752 36978383 37531836 37655904 37854648 38154402 38352204 38510032 39104208 39153582 39310596 40009398 40081392 40289184 40608216 40659489 40775328 40957488 41548221 41838768 42362892 42532776 42586479 42707808 43323786 43366752 43646616 43992234 44173272 44350416 45091566 45325332 45511856 45872244 46077174 46214064 46266792 46959264 47262312 47854378 47991528 48046284 48189024 48988368 49102443 49242336 49694931 49894218 50042448 50266008 50472864 50872536 51136272 51200838 51990822 52050141 52204776 52414128 53170101 53345864 54144288 54212652 55111914 55397628 55497312 56297754 56483856 56710368 56781972 57528306 57765048 58195488 58656312 58730373 58897696 58965894 60014097 60122088 60433776 61162992 61436232 61689056 62578802 62758152 63016416 63544338 63988704 64061712 64985679 65050128 65469924 65988351 66259908 66525624 67021344 67830048 67987998 68267784 68808366 69115761 69321096 69400188 69606368 70893468 71781567 72069426 72283536 72573408 73482552 73863504 73956766 75063672 75709296 76308804 76704408 76801257 77020064 77986233 78208416 78307164 78621192 80018796 80162784 81216432 81318978 81914976 82667871 83096442 83677536 84725784 85065552 85172958 86292459 86647572 87293232 87984468 88346544 88700832 90183132 90650664 91023712 91744488 92154348 92428128 92533584 93868203 94524624 95316507 95708756 95983056 96092568 97976736 98204886 99389862 99788436 100084896 100532016 101745072 101981997 102272544 102401676 103212549 103981644 104100282 104409552 104828256 106340202 106691728 108104139 108425304 110223828 110795256 110935149 112595508 112967712 113563944 115056612 115530096 117312624 117460746 117931788 120028194 120244176 120867552 121978467 122325984 122872464 124644663 125157604 125516304 127088676 127759437 128123424 129971358 130100256 130939848 131976702 132519816 133051248 135975996 136535568 137616732 138231522 138642192 138800376 141786936 143563134 144138852 144567072 146965104 147307329 147727008 147913532 149084793 150127344 151418592 152617608 153408816 153602514 155972466 156150423 156614328 157242384 159510303 160037592 162432864 162637956 165335742 166192884 169451568 170131104 170345916 172584918 173295144 174586464 175968936 176191119 176693088 180042291 180366264 181301328 183488976 184308696 185067168 187736406 189049248 190633014 191417512 191966112 192185136 194957037 196409772 198779724 199576872 201064032 203490144 203963994 204803352 206425098 207963288 208200564 208819104 212680404 213383456 215344701 216208278 216850608 220447656 221590512 221870298 225191016 227127888 230113224 230403771 231060192 234625248 234921492 235863576 240056388 240488352 243956934 245744928 248003613 249289326 250315208 251032608 254177352 255518874 259942716 261879696 263953404 265039632 266102496 271951992 273071136 275233464 276463044 277284384 277600752 281604609 283573872 285949521 287126268 288277704 293930208 294614658 295827064 298169586 300254688 305235216 306817632 307205028 309637647 311944932 312300846 313228656 314484768 319020606 320075184 324312417 325275912 330671484 332385768 332805447 338903136 340691832 345169836 346590288 351937872 352382238 360084582 360732528 362602656 365935401 366977952 368617392 373933989 375472812 381266028 382835024 383278311 384370272 389914074 392819544 397559448 399153744 406762213 407927988 409606704 412850196 415926576 416401128 425360808 430689402 432416556 433701216 440895312 441921987 443181024 443740596 447254379 450382032 454255776 460226448 460807542 468451269 469842984 471727152 478530909 480112776 487913868 496007226 498578652 500630416 508354704 511037748 519885432 523759392 527906808 528573357 530079264 540126873 543903984 550466928 552926088 555201504 563209218 567147744 571899042 574252536 576555408 584871111 589229316 591654128 596339172 610470432 614410056 619275294 623889864 624601692 626457312 638041212 640150368 646034103 648624834 650551824 661342968 664771536 665610894 681383664 690339672 691211313 693180576 703875744 704764476 720169164 721465056 731870802 737234784 747867978 750945624 762532056 765670048 766556622 779828148 785639088 795118896 798307488 813524426 815855976 819213408 825700392 831853152 832802256 844813827 850721616 857848563 861378804 864833112 881790624 883843974 887481192 894508758 900764064 920452896 921615084 936902538 939685968 943454304 957061818 960225552 975827736 992014452 997157304 998416341 1001260832 1016709408 1022075496 1039770864 1055813616 1057146714 1080253746 1087807968 1100933856 1105852176 1121801967 1126418436 1143798084 1148505072 1153110816 1169742222 1178458632 1183308256 1192678344 1220286639 1228820112 1238550588 1247779728 1249203384 1276082424 1292068206 1297249668 1301103648 1322685936 1325765961 1329543072 1331221788 1341763137 1362767328 1380679344 1382422626 1405353807 1409528952 1440338328 1463741604 1495735956 1501891248 1525064112 1533113244 1559656296 1571278176 1585720071 1590237792 1620380619 1627048852 1631711952 1651400784 1665604512 1689627654 1701443232 1715697126 1722757608 1729666224 1754613333 1767687948 1774962384 1789017516 1843230168 1873805076 1879371936 1914123636 1920451104 1938102309 1951655472 1984028904 1994314608 1996832682 2044150992 2073633939 2079541728 2111627232 2114293428 2160507492 2211704352 2243603934 2252836872 2287596168 2297010144 2339484444 2356917264 2385356688 2440573278 2457640224 2477101176 2495559456 2498406768 2534441481 2552164848 2584136412 2594499336 2645371872 2651531922 2662443576 2683526274 2761358688 2764845252 2810707614 2819057904 2880676656 2927483208 2991471912 2995249023 3003782496 3050128224 3066226488 3119312592 3171440142 3240761238 3254097704 3263423904 3302801568 3379255308 3431394252 3445515216 3459332448 3509226666 3535375896 3549924768 3578035032 3660859917 3686460336 3747610152 3828247272 3876204618 3903310944 3968057808 3988629216 3993665364 4025289411 4088301984 4147267878 4216061421 4228586856 4321014984 4487207868 4505673744 4575192336 4678968888 4713834528 4757160213 4770713376 4861141857 4881146556 4954202352 4996813536 5068882962 5104329696 5168272824 5188998672 5263839999 5303063844 5324887152 5367052548 5529690504 5621415228 5638115808 5761353312 5814306927 5854966416 5982943824 5990498046 6132452976 6220901817 6238625184 6342880284 6481522476 6508195408 6758510616 6862788504 6891030432 7018453332 7070751792 7156070064 7321719834 7372920672 7495220304 7603324443 7656494544 7752409236 7936115616 7987330728 8050578822 8294535756 8432122842 8457173712 8642029968 8974415736 8985747069 9011347488 9150384672 9357937776 9514320426 9722283714 9762293112 9908404704 10137765924 10336545648 10377997344 10527679998 10606127688 10649774304 10734105096 10982579751 11059381008 11242830456 11628613854 11709932832 11965887648 11980996092 12264905952 12441803634 12685760568 12963044952 13016390816 13517021232 13725577008 14036906664 14141503584 14312140128 14583425571 14643439668 14990440608 15206648886 15312989088 15504818472 15974661456 16101157644 16589071512 16864245684 16914347424 17284059936 17442920781 17948831472 17971494138 18715875552 19028640852 19444567428 19524586224 20275531848 20673091296 21055359996 21212255376 21468210192 21965159502 22118762016 22485660912 22809973329 23257227708 23961992184 24883607268 25371521136 25926089904 26957241207 27034042464 27451154016 28073813328 29166851142 29286879336 30413297772 31009636944 31949322912 32202315288 32947739253 33178143024 33728491368 34885841562 35897662944 35942988276 38057281704 38889134856 39049172448 40551063696 42110719992 42424510752 42936420384 43930319004 44971321824 45619946658 46514455416 47923984368 49767214536 50743042272 51852179808 52328762343 53914482414 56147626656 58333702284 58573758672 60826595544 62019273888 64404630576 65895478506 66356286048 67456982736 68429919987 69771683124 71885976552 76114563408 77778269712 80871723621 81102127392 84221439984 87860638008 91239893316 93028910832 95847968736 98843217759 99534429072 104657524686 107828964828 116667404568 117147517344 121653191088 128809261152 131790957012 134913965472 136859839974 139543366248 143771953104 152229126816 155556539424 161743447242 168442879968 175721276016 182479786632 186057821664 197686435518 199068858144 209315049372 215657929656 233334809136 243306382176 263581914024 273719679948 279086732496 287543906208 296529653277 323486894484 351442552032 364959573264 395372871036 418630098744 431315859312 466669618272 527163828048 547439359896 558173464992 593059306554 646973788968 729919146528 790745742072 837260197488 862631718624 889588959831 1054327656096 1094878719792 1186118613108 1293947577936 1581491484144 1674520394976 1779177919662 2189757439584 2372237226216 2587895155872 3162982968288 3558355839324 4744474452432 7116711678648 9488948904864 14233423357296 28466846714592
- Sum of all divisors σ(n): 107361058452480
- Sum of proper divisors (its aliquot sum) s(n): 78894211737888
- 28466846714592 is an abundant number, because the sum of its proper divisors (78894211737888) is greater than itself. Its abundance is 50427365023296
Bases of 28466846714592
- Binary: 1100111100011111101000100100101001010111000002
- Hexadecimal: 0x19E3F4494AE0
- Base-36: A39HLJI00
Squares and roots of 28466846714592
- 28466846714592 squared (284668467145922) is 810361361872077344305726464
- 28466846714592 cubed (284668467145923) is 23068432671840443763331585790930229362688
-
The
square root of 28466846714592 is 5335433.1328011225 -
The
cube root of 28466846714592 is 30533.7248436189
Scales and comparisons
How big is 28466846714592?- 28,466,846,714,592 seconds is equal to 905,157 years, 34 weeks, 6 days, 12 hours, 43 minutes, 12 seconds.
-
To count from 1 to 28,466,846,714,592 would take you about two million, two hundred sixty-two thousand, eight hundred ninety-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 28466846714592 cubic inches would be around 2544.5 feet tall.
Recreational maths with 28466846714592
- 28466846714592 backwards is 29541764866482
- 28466846714592 is a
Harshad number . - The number of decimal digits it has is: 14
- The sum of 28466846714592's digits is 72
- More coming soon!
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 28466846714592 - Facts about the integer". Numbermatics.com. 2024. Web. 20 June 2024.
APA style:
Numbermatics. (2024). Number 28466846714592 - Facts about the integer. Retrieved 20 June 2024, from https://numbermatics.com/n/28466846714592/
Chicago style:
Numbermatics. 2024. "Number 28466846714592 - Facts about the integer". https://numbermatics.com/n/28466846714592/
The information we have on file for 28466846714592 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 28466846714592, math, Factors of 28466846714592, curriculum, school, college, exams, university, Prime factorization of 28466846714592, STEM, science, technology, engineering, physics, economics, calculator, twenty-eight trillion, four hundred sixty-six billion, eight hundred forty-six million, seven hundred fourteen thousand, five hundred ninety-two.