3220791610752000
3,220,791,610,752,000 is an even composite number composed of five prime numbers multiplied together.
3220791610752000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand, one hundred twelve divisors.
Prime factorization of 3220791610752000:
210 × 37 × 53 × 73 × 3972
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 5 × 73 × 397 × 397)See below for interesting mathematical facts about the number 3220791610752000 from the Numbermatics database.
Names of 3220791610752000
- Cardinal: 3220791610752000 can be written as Three quadrillion, two hundred twenty trillion, seven hundred ninety-one billion, six hundred ten million, seven hundred fifty-two thousand.
Scientific notation
- Scientific notation: 3.220791610752 × 1015
Factors of 3220791610752000
Divisors of 3220791610752000
- Number of divisors d(n): 2112
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 73 75 80 81 90 96 100 108 120 125 128 135 144 146 150 160 162 180 192 200 216 219 225 240 243 250 256 270 288 292 300 320 324 360 365 375 384 397 400 405 432 438 450 480 486 500 512 540 576 584 600 640 648 657 675 720 729 730 750 768 794 800 810 864 876 900 960 972 1000 1024 1080 1095 1125 1152 1168 1191 1200 1215 1280 1296 1314 1350 1440 1458 1460 1500 1536 1588 1600 1620 1728 1752 1800 1825 1920 1944 1971 1985 2000 2025 2160 2187 2190 2250 2304 2336 2382 2400 2430 2560 2592 2628 2700 2880 2916 2920 3000 3072 3176 3200 3240 3285 3375 3456 3504 3573 3600 3645 3650 3840 3888 3942 3970 4000 4050 4320 4374 4380 4500 4608 4672 4764 4800 4860 5120 5184 5256 5400 5475 5760 5832 5840 5913 5955 6000 6075 6352 6400 6480 6570 6750 6912 7008 7146 7200 7290 7300 7680 7776 7884 7940 8000 8100 8640 8748 8760 9000 9125 9216 9344 9528 9600 9720 9855 9925 10125 10368 10512 10719 10800 10935 10950 11520 11664 11680 11826 11910 12000 12150 12704 12800 12960 13140 13500 13824 14016 14292 14400 14580 14600 15360 15552 15768 15880 16000 16200 16425 17280 17496 17520 17739 17865 18000 18225 18250 18688 19056 19200 19440 19710 19850 20250 20736 21024 21438 21600 21870 21900 23040 23328 23360 23652 23820 24000 24300 25408 25600 25920 26280 27000 27375 27648 28032 28584 28800 28981 29160 29200 29565 29775 30375 31104 31536 31760 32000 32157 32400 32850 34560 34992 35040 35478 35730 36000 36450 36500 37376 38112 38400 38880 39420 39700 40500 41472 42048 42876 43200 43740 43800 46080 46656 46720 47304 47640 48000 48600 49275 49625 50816 51840 52560 53217 53595 54000 54675 54750 56064 57168 57600 57962 58320 58400 59130 59550 60750 62208 63072 63520 64000 64314 64800 65700 69120 69984 70080 70956 71460 72000 72900 73000 74752 76224 76800 77760 78840 79400 81000 82125 82944 84096 85752 86400 86943 87480 87600 88695 89325 91125 93312 93440 94608 95280 96000 96471 97200 98550 99250 101632 103680 105120 106434 107190 108000 109350 109500 112128 114336 115200 115924 116640 116800 118260 119100 121500 124416 126144 127040 128000 128628 129600 131400 138240 139968 140160 141912 142920 144000 144905 145800 146000 147825 148875 152448 155520 157609 157680 158800 159651 160785 162000 164250 168192 171504 172800 173886 174960 175200 177390 178650 182250 186624 186880 189216 190560 192000 192942 194400 197100 198500 203264 207360 210240 212868 214380 216000 218700 219000 224256 228672 230400 231848 233280 233600 236520 238200 243000 246375 248832 252288 254080 257256 259200 260829 262800 266085 267975 273375 279936 280320 283824 285840 288000 289413 289810 291600 292000 295650 297750 304896 311040 315218 315360 317600 319302 321570 324000 328500 336384 343008 345600 347772 349920 350400 354780 357300 364500 373248 373760 378432 381120 384000 385884 388800 394200 397000 406528 414720 420480 425736 428760 432000 434715 437400 438000 443475 446625 457344 463696 466560 467200 472827 473040 476400 482355 486000 492750 504576 508160 514512 518400 521658 525600 532170 535950 546750 559872 560640 567648 571680 576000 578826 579620 583200 584000 591300 595500 609792 622080 630436 630720 635200 638604 643140 648000 657000 672768 686016 691200 695544 699840 700800 709560 714600 724525 729000 739125 746496 756864 762240 771768 777600 782487 788045 788400 794000 798255 803925 840960 851472 857520 864000 868239 869430 874800 876000 886950 893250 914688 927392 933120 934400 945654 946080 952800 964710 972000 985500 1009152 1016320 1029024 1036800 1043316 1051200 1064340 1071900 1093500 1119744 1121280 1135296 1143360 1152000 1157652 1159240 1166400 1168000 1182600 1191000 1219584 1244160 1260872 1261440 1270400 1277208 1286280 1296000 1304145 1314000 1330425 1339875 1372032 1391088 1399680 1401600 1418481 1419120 1429200 1447065 1449050 1458000 1478250 1513728 1524480 1543536 1555200 1564974 1576090 1576800 1588000 1596510 1607850 1681920 1702944 1715040 1728000 1736478 1738860 1749600 1752000 1773900 1786500 1829376 1854784 1866240 1868800 1891308 1892160 1905600 1929420 1944000 1971000 2018304 2032640 2058048 2073600 2086632 2102400 2128680 2143800 2173575 2187000 2217375 2239488 2270592 2286720 2315304 2318480 2332800 2336000 2347461 2364135 2365200 2382000 2411775 2521744 2522880 2540800 2554416 2572560 2592000 2608290 2628000 2660850 2679750 2744064 2782176 2799360 2803200 2836962 2838240 2858400 2894130 2898100 2916000 2956500 3027456 3048960 3087072 3110400 3129948 3152180 3153600 3176000 3193020 3215700 3363840 3405888 3430080 3456000 3472956 3477720 3499200 3504000 3547800 3573000 3622625 3658752 3709568 3732480 3782616 3784320 3811200 3858840 3888000 3912435 3940225 3942000 3991275 4019625 4116096 4173264 4204800 4255443 4257360 4287600 4341195 4347150 4374000 4434750 4541184 4573440 4630608 4636960 4665600 4672000 4694922 4728270 4730400 4764000 4823550 5043488 5045760 5081600 5108832 5145120 5184000 5216580 5256000 5321700 5359500 5488128 5564352 5598720 5606400 5673924 5676480 5716800 5788260 5796200 5832000 5913000 6054912 6097920 6174144 6220800 6259896 6304360 6307200 6352000 6386040 6431400 6520725 6652125 6811776 6860160 6945912 6955440 6998400 7008000 7042383 7092405 7095600 7146000 7235325 7245250 7419136 7565232 7568640 7622400 7717680 7776000 7824870 7880450 7884000 7982550 8039250 8232192 8346528 8409600 8510886 8514720 8575200 8682390 8694300 8748000 8869500 9082368 9146880 9261216 9273920 9331200 9344000 9389844 9456540 9460800 9528000 9647100 10086976 10091520 10163200 10217664 10290240 10368000 10433160 10512000 10643400 10719000 10867875 10976256 11128704 11197440 11347848 11352960 11433600 11505457 11576520 11592400 11664000 11737305 11820675 11826000 12058875 12348288 12519792 12608720 12614400 12704000 12766329 12772080 12862800 13041450 13304250 13623552 13720320 13891824 13910880 13996800 14016000 14084766 14184810 14191200 14292000 14470650 14490500 14838272 15130464 15137280 15244800 15435360 15552000 15649740 15760900 15768000 15965100 16078500 16464384 16693056 16819200 17021772 17029440 17150400 17364780 17388600 17496000 17739000 18164736 18293760 18522432 18547840 18662400 18779688 18913080 18921600 19056000 19294200 19562175 19701125 19956375 20173952 20435328 20580480 20866320 21024000 21127149 21277215 21286800 21438000 21705975 21735750 22257408 22695696 22705920 22867200 23010914 23153040 23184800 23328000 23474610 23641350 23652000 24117750 24696576 25039584 25217440 25228800 25408000 25532658 25544160 25725600 26082900 26608500 27247104 27440640 27783648 27821760 27993600 28032000 28169532 28369620 28382400 28584000 28941300 28981000 29676544 30260928 30274560 30489600 30870720 31104000 31299480 31521800 31536000 31930200 32157000 32603625 32928768 33386112 34043544 34058880 34300800 34516371 34729560 34777200 34992000 35211915 35462025 35478000 36176625 37044864 37095680 37559376 37826160 37843200 38112000 38298987 38588400 39124350 39402250 39912750 40347904 40870656 41160960 41732640 42048000 42254298 42554430 42573600 42876000 43411950 43471500 44514816 45391392 45411840 45734400 46021828 46306080 46369600 46656000 46949220 47282700 47304000 48235500 49393152 50079168 50434880 50457600 50816000 51065316 51088320 51451200 52165800 53217000 54494208 54881280 55567296 55643520 55987200 56339064 56739240 56764800 57168000 57527285 57882600 57962000 58686525 59103375 60521856 61741440 62598960 63043600 63072000 63381447 63831645 63860400 64314000 65207250 66772224 68087088 68117760 68601600 69032742 69459120 69554400 69984000 70423830 70924050 70956000 72353250 74089728 74191360 75118752 75652320 75686400 76224000 76597974 77176800 78248700 78804500 79825500 80695808 81741312 82321920 83465280 84096000 84508596 85108860 85147200 85752000 86823900 86943000 89029632 90782784 90823680 91468800 92043656 92612160 92739200 93312000 93898440 94565400 94608000 96471000 97810875 98786304 100158336 100869760 102130632 102176640 102902400 103549113 104331600 105635745 106386075 106434000 108529875 111134592 111287040 112678128 113478480 113529600 114336000 114896961 115054570 115765200 115924000 117373050 118206750 121043712 123482880 125197920 126087200 126144000 126762894 127663290 127720800 128628000 130414500 133544448 136174176 136235520 137203200 138065484 138918240 139108800 139968000 140847660 141848100 141912000 144706500 148179456 148382720 150237504 151304640 151372800 152448000 153195948 154353600 156497400 157609000 159651000 161391616 163482624 164643840 166930560 169017192 170217720 170294400 171504000 172581855 173647800 173886000 176059575 177310125 181565568 184087312 185224320 185478400 187796880 189130800 189216000 191494935 192942000 195621750 200316672 201739520 204261264 204353280 205804800 207098226 208663200 211271490 212772150 212868000 217059750 222269184 222574080 225356256 226956960 227059200 228672000 229793922 230109140 231530400 231848000 234746100 236413500 242087424 246965760 250395840 252174400 252288000 253525788 255326580 255441600 257256000 260829000 267088896 272348352 272471040 274406400 276130968 277836480 278217600 279936000 281695320 283696200 283824000 287636425 289413000 293432625 296358912 300475008 302609280 306391896 308707200 310647339 312994800 315218000 316907235 319158225 319302000 333861120 338034384 340435440 340588800 343008000 344690883 345163710 347295600 347772000 352119150 354620250 363131136 368174624 370448640 370956800 375593760 378261600 378432000 382989870 385884000 391243500 400633344 403479040 408522528 408706560 411609600 414196452 417326400 422542980 425544300 425736000 434119500 444538368 445148160 450712512 453913920 454118400 457344000 459587844 460218280 463060800 463696000 469492200 472827000 484174848 493931520 500791680 504348800 507051576 510653160 510883200 514512000 517745565 521658000 528178725 531930375 544696704 552261936 555672960 556435200 563390640 567392400 567648000 574484805 575272850 578826000 586865250 600950016 605218560 612783792 617414400 621294678 625989600 630436000 633814470 638316450 638604000 667722240 676068768 680870880 681177600 686016000 689381766 690327420 694591200 695544000 704238300 709240500 726262272 736349248 740897280 741913600 751187520 756523200 756864000 765979740 771768000 782487000 801266688 806958080 817045056 817413120 823219200 828392904 834652800 845085960 851088600 851472000 862909275 868239000 880297875 889076736 901425024 907827840 919175688 920436560 926121600 927392000 931942017 938984400 945654000 957474675 1001583360 1008697600 1014103152 1021306320 1021766400 1029024000 1035491130 1043316000 1056357450 1063860750 1089393408 1104523872 1111345920 1112870400 1126781280 1134784800 1135296000 1148969610 1150545700 1157652000 1173730500 1201900032 1210437120 1225567584 1234828800 1242589356 1251979200 1260872000 1267628940 1276632900 1277208000 1335444480 1352137536 1361741760 1362355200 1372032000 1378763532 1380654840 1389182400 1391088000 1408476600 1418481000 1438182125 1452524544 1472698496 1481794560 1502375040 1513046400 1531959480 1543536000 1553236695 1564974000 1584536175 1595791125 1634090112 1656785808 1669305600 1690171920 1702177200 1702944000 1723454415 1725818550 1736478000 1760595750 1802850048 1815655680 1838351376 1840873120 1852243200 1854784000 1863884034 1877968800 1891308000 1914949350 2003166720 2017395200 2028206304 2042612640 2043532800 2058048000 2070982260 2086632000 2112714900 2127721500 2178786816 2209047744 2222691840 2225740800 2253562560 2269569600 2270592000 2297939220 2301091400 2315304000 2347461000 2403800064 2420874240 2451135168 2469657600 2485178712 2503958400 2521744000 2535257880 2553265800 2554416000 2588727825 2640893625 2704275072 2723483520 2757527064 2761309680 2778364800 2782176000 2795826051 2816953200 2836962000 2872424025 2876364250 2945396992 3004750080 3026092800 3063918960 3087072000 3106473390 3129948000 3169072350 3191582250 3268180224 3313571616 3338611200 3380343840 3404354400 3405888000 3446908830 3451637100 3472956000 3521191500 3605700096 3631311360 3676702752 3681746240 3704486400 3709568000 3727768068 3755937600 3782616000 3829898700 4006333440 4034790400 4056412608 4085225280 4087065600 4116096000 4141964520 4173264000 4225429800 4255443000 4314546375 4357573632 4418095488 4445383680 4507125120 4539139200 4595878440 4602182800 4630608000 4659710085 4694922000 4787373375 4902270336 4970357424 5007916800 5043488000 5070515760 5106531600 5108832000 5177455650 5281787250 5408550144 5446967040 5515054128 5522619360 5556729600 5564352000 5591652102 5633906400 5673924000 5744848050 5752728500 5890793984 6009500160 6052185600 6127837920 6174144000 6212946780 6259896000 6338144700 6383164500 6536360448 6627143232 6677222400 6760687680 6808708800 6811776000 6893817660 6903274200 6945912000 7042383000 7211400192 7262622720 7353405504 7363492480 7408972800 7455536136 7511875200 7565232000 7659797400 7766183475 7922680875 8112825216 8170450560 8283929040 8346528000 8387478153 8450859600 8510886000 8617272075 8629092750 8836190976 9014250240 9078278400 9191756880 9204365600 9261216000 9319420170 9389844000 9574746750 9804540672 9940714848 10015833600 10086976000 10141031520 10213063200 10217664000 10354911300 10563574500 10817100288 10893934080 11030108256 11045238720 11113459200 11128704000 11183304204 11267812800 11347848000 11489696100 11505457000 11781587968 12019000320 12104371200 12255675840 12348288000 12425893560 12519792000 12676289400 12766329000 12943639125 13072720896 13254286464 13521375360 13617417600 13787635320 13806548400 13891824000 13979130255 14084766000 14362120125 14706811008 14726984960 14911072272 15023750400 15130464000 15319594800 15532366950 15845361750 16225650432 16340901120 16567858080 16693056000 16774956306 16901719200 17021772000 17234544150 17258185500 17672381952 18028500480 18156556800 18383513760 18408731200 18522432000 18638840340 18779688000 19149493500 19609081344 19881429696 20031667200 20173952000 20282063040 20426126400 20435328000 20709822600 21127149000 21634200576 21787868160 22060216512 22090477440 22226918400 22366608408 22535625600 22695696000 22979392200 23010914000 23298550425 24511351680 24851787120 25039584000 25162434459 25352578800 25532658000 25887278250 26508572928 27042750720 27234835200 27575270640 27613096800 27783648000 27958260510 28169532000 28724240250 29413622016 29453969920 29822144544 30047500800 30260928000 30639189600 31064733900 31690723500 32451300864 32681802240 33135716160 33386112000 33549912612 33803438400 34043544000 34469088300 34516371000 35344763904 36057000960 36313113600 36767027520 36817462400 37044864000 37277680680 37559376000 38298987000 38830917375 39218162688 39762859392 40564126080 40852252800 41419645200 41937390765 42254298000 43086360375 44120433024 44180954880 44733216816 45071251200 45391392000 45958784400 46021828000 46597100850 49022703360 49703574240 50079168000 50324868918 50705157600 51065316000 51774556500 53017145856 54085501440 54469670400 55150541280 55226193600 55567296000 55916521020 56339064000 57448480500 58827244032 58907939840 59644289088 60095001600 60521856000 61278379200 62129467800 63381447000 64902601728 65363604480 66271432320 67099825224 67606876800 68087088000 68938176600 69032742000 69895651275 73534055040 73634924800 74555361360 75118752000 76597974000 77661834750 79525718784 81128252160 81704505600 82839290400 83874781530 84508596000 86172720750 88240866048 88361909760 89466433632 90142502400 90782784000 91917568800 92043656000 93194201700 98045406720 99407148480 100158336000 100649737836 101410315200 102130632000 103549113000 106034291712 108171002880 108939340800 110301082560 110452387200 111134592000 111833042040 112678128000 114896961000 116492752125 117654488064 119288578176 122556758400 124258935600 125812172295 126762894000 132542864640 134199650448 135213753600 136174176000 137876353200 138065484000 139791302550 147068110080 147269849600 149110722720 150237504000 153195948000 155323669500 159051437568 162256504320 163409011200 165678580800 167749563060 169017192000 172345441500 176481732096 176723819520 178932867264 180285004800 181565568000 183835137600 184087312000 186388403400 196090813440 198814296960 201299475672 202820630400 204261264000 207098226000 209686953825 220602165120 220904774400 223666084080 225356256000 229793922000 232985504250 238577156352 245113516800 248517871200 251624344590 253525788000 265085729280 268399300896 270427507200 272348352000 275752706400 276130968000 279582605100 294136220160 294539699200 298221445440 300475008000 306391896000 310647339000 318102875136 324513008640 326818022400 331357161600 335499126120 338034384000 344690883000 349478256375 352963464192 357865734528 367670275200 368174624000 372776806800 397628593920 402598951344 405641260800 408522528000 414196452000 419373907650 441204330240 441809548800 447332168160 450712512000 459587844000 465971008500 477154312704 490227033600 497035742400 503248689180 507051576000 530171458560 536798601792 540855014400 544696704000 551505412800 552261936000 559165210200 588272440320 596442890880 612783792000 621294678000 629060861475 662714323200 670998252240 676068768000 689381766000 698956512750 715731469056 735340550400 736349248000 745553613600 795257187840 805197902688 811282521600 817045056000 828392904000 838747815300 882408660480 883619097600 894664336320 901425024000 919175688000 931942017000 954308625408 980454067200 994071484800 1006497378360 1014103152000 1048434769125 1073597203584 1103010825600 1104523872000 1118330420400 1192885781760 1225567584000 1242589356000 1258121722950 1325428646400 1341996504480 1352137536000 1378763532000 1397913025500 1431462938112 1470681100800 1472698496000 1491107227200 1590514375680 1610395805376 1622565043200 1634090112000 1656785808000 1677495630600 1764817320960 1789328672640 1838351376000 1863884034000 1988142969600 2012994756720 2028206304000 2096869538250 2147194407168 2206021651200 2209047744000 2236660840800 2385771563520 2451135168000 2485178712000 2516243445900 2650857292800 2683993008960 2704275072000 2757527064000 2795826051000 2862925876224 2941362201600 2982214454400 3145304307375 3220791610752 3313571616000 3354991261200 3578657345280 3676702752000 3727768068000 3976285939200 4025989513440 4056412608000 4193739076500 4294388814336 4412043302400 4418095488000 4473321681600 4771543127040 4902270336000 4970357424000 5032486891800 5367986017920 5515054128000 5591652102000 5964428908800 6290608614750 6441583221504 6627143232000 6709982522400 7157314690560 7353405504000 7455536136000 7952571878400 8051979026880 8112825216000 8387478153000 8588777628672 8824086604800 8946643363200 9940714848000 10064973783600 10735972035840 11030108256000 11183304204000 11928857817600 12581217229500 12883166443008 13254286464000 13419965044800 14314629381120 14706811008000 14911072272000 16103958053760 16774956306000 17893286726400 19881429696000 20129947567200 21471944071680 22060216512000 22366608408000 23857715635200 25162434459000 25766332886016 26839930089600 29822144544000 32207916107520 33549912612000 35786573452800 39762859392000 40259895134400 42943888143360 44120433024000 44733216816000 50324868918000 53679860179200 59644289088000 64415832215040 67099825224000 71573146905600 80519790268800 89466433632000 100649737836000 107359720358400 119288578176000 128831664430080 134199650448000 161039580537600 178932867264000 201299475672000 214719440716800 268399300896000 322079161075200 357865734528000 402598951344000 536798601792000 644158322150400 805197902688000 1073597203584000 1610395805376000 3220791610752000
- Sum of all divisors σ(n): 12246848118161280
- Sum of proper divisors (its aliquot sum) s(n): 9026056507409280
- 3220791610752000 is an abundant number, because the sum of its proper divisors (9026056507409280) is greater than itself. Its abundance is 5805264896657280
Bases of 3220791610752000
- Binary: 10110111000101001010111110111101101010111100000000002
- Hexadecimal: 0xB714AFBDABC00
- Base-36: VPOB8MO000
Squares and roots of 3220791610752000
- 3220791610752000 squared (32207916107520002) is 10373498599890462682005504000000
- 3220791610752000 cubed (32207916107520003) is 33410877264674820072339053193889579008000000000
-
The
square root of 3220791610752000 is 56752018.5610344613 -
The
cube root of 3220791610752000 is 147679.7251624227
Scales and comparisons
How big is 3220791610752000?- 3,220,791,610,752,000 seconds is equal to 102,411,210 years, 34 weeks, 2 days.
-
To count from 1 to 3,220,791,610,752,000 would take you about three hundred seven million, two hundred thirty-three thousand, six hundred thirty-one 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 3220791610752000 cubic inches would be around 12306.6 feet tall.
Recreational maths with 3220791610752000
- 3220791610752000 backwards is 0002570161970223
- 3220791610752000 is a
Harshad number . - The number of decimal digits it has is: 16
- The sum of 3220791610752000's digits is 45
- 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 3220791610752000 - Facts about the integer". Numbermatics.com. 2024. Web. 4 June 2024.
APA style:
Numbermatics. (2024). Number 3220791610752000 - Facts about the integer. Retrieved 4 June 2024, from https://numbermatics.com/n/3220791610752000/
Chicago style:
Numbermatics. 2024. "Number 3220791610752000 - Facts about the integer". https://numbermatics.com/n/3220791610752000/
The information we have on file for 3220791610752000 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 3220791610752000, math, Factors of 3220791610752000, curriculum, school, college, exams, university, Prime factorization of 3220791610752000, STEM, science, technology, engineering, physics, economics, calculator, three quadrillion, two hundred twenty trillion, seven hundred ninety-one billion, six hundred ten million, seven hundred fifty-two thousand.