988047576921600
988,047,576,921,600 is an even composite number composed of five prime numbers multiplied together.
What does the number 988047576921600 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 2160 divisors.
988047576921600 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two thousand, one hundred sixty divisors.
Prime factorization of 988047576921600:
29 × 37 × 52 × 132 × 4572
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 13 × 13 × 457 × 457)See below for interesting mathematical facts about the number 988047576921600 from the Numbermatics database.
Names of 988047576921600
- Cardinal: 988047576921600 can be written as Nine hundred eighty-eight trillion, forty-seven billion, five hundred seventy-six million, nine hundred twenty-one thousand, six hundred.
Scientific notation
- Scientific notation: 9.880475769216 × 1014
Factors of 988047576921600
Divisors of 988047576921600
- Number of divisors d(n): 2160
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 27 30 32 36 39 40 45 48 50 52 54 60 64 65 72 75 78 80 81 90 96 100 104 108 117 120 128 130 135 144 150 156 160 162 169 180 192 195 200 208 216 225 234 240 243 256 260 270 288 300 312 320 324 325 338 351 360 384 390 400 405 416 432 450 457 468 480 486 507 512 520 540 576 585 600 624 640 648 650 675 676 702 720 729 768 780 800 810 832 845 864 900 914 936 960 972 975 1014 1040 1053 1080 1152 1170 1200 1215 1248 1280 1296 1300 1350 1352 1371 1404 1440 1458 1521 1536 1560 1600 1620 1664 1690 1728 1755 1800 1828 1872 1920 1944 1950 2025 2028 2080 2106 2160 2187 2285 2304 2340 2400 2430 2496 2535 2560 2592 2600 2700 2704 2742 2808 2880 2916 2925 3042 3120 3159 3200 3240 3328 3380 3456 3510 3600 3645 3656 3744 3840 3888 3900 4050 4056 4113 4160 4212 4225 4320 4374 4563 4570 4608 4680 4800 4860 4992 5070 5184 5200 5265 5400 5408 5484 5616 5760 5832 5850 5941 6075 6084 6240 6318 6400 6480 6656 6760 6855 6912 7020 7200 7290 7312 7488 7605 7680 7776 7800 8100 8112 8226 8320 8424 8450 8640 8748 8775 9126 9140 9360 9477 9600 9720 9984 10140 10368 10400 10530 10800 10816 10935 10968 11232 11425 11520 11664 11700 11882 12150 12168 12339 12480 12636 12675 12800 12960 13520 13689 13710 13824 14040 14400 14580 14624 14976 15210 15552 15600 15795 16200 16224 16452 16640 16848 16900 17280 17496 17550 17823 18225 18252 18280 18720 18954 19200 19440 19968 20280 20565 20736 20800 21060 21600 21632 21870 21936 22464 22815 22850 23040 23328 23400 23764 24300 24336 24678 24960 25272 25350 25920 26325 27040 27378 27420 28080 28431 28800 29160 29248 29705 29952 30420 31104 31200 31590 32400 32448 32904 33280 33696 33800 34275 34560 34992 35100 35646 36450 36504 36560 37017 37440 37908 38025 38400 38880 40560 41067 41130 41472 41600 42120 43200 43264 43740 43872 44928 45630 45700 46656 46800 47385 47528 48600 48672 49356 49920 50544 50700 51840 52650 53469 54080 54675 54756 54840 56160 56862 57600 58320 58496 59410 59904 60840 61695 62208 62400 63180 64800 64896 65808 67392 67600 68445 68550 69120 69984 70200 71292 72900 73008 73120 74034 74880 75816 76050 77233 77760 78975 81120 82134 82260 83200 84240 86400 86528 87480 87744 89115 89856 91260 91400 93312 93600 94770 95056 97200 97344 98712 99840 101088 101400 102825 103680 105300 106938 108160 109350 109512 109680 111051 112320 113724 114075 115200 116640 116992 118820 121680 123201 123390 124416 124800 126360 129600 129792 131616 134784 135200 136890 137100 139968 140400 142155 142584 145800 146016 146240 148068 148525 149760 151632 152100 154466 155520 157950 160407 162240 164268 164520 166400 168480 172800 174960 175488 178230 179712 182520 182800 185085 186624 187200 189540 190112 194400 194688 197424 202176 202800 205335 205650 207360 208849 210600 213876 216320 218700 219024 219360 222102 224640 227448 228150 231699 233280 233984 236925 237640 243360 246402 246780 249600 252720 259200 259584 263232 267345 269568 270400 273780 274200 279936 280800 284310 285168 291600 292032 292480 296136 297050 299520 303264 304200 308475 308932 311040 315900 320814 324480 328536 329040 333153 336960 342225 345600 349920 350976 356460 365040 365600 369603 370170 373248 374400 379080 380224 386165 388800 389376 394848 404352 405600 410670 411300 417698 421200 427752 432640 437400 438048 438720 444204 445575 449280 454896 456300 463398 466560 473850 475280 481221 486720 492804 493560 499200 505440 518400 526464 534690 539136 540800 547560 548400 555255 559872 561600 568620 570336 583200 584064 584960 592272 594100 606528 608400 616005 616950 617864 622080 626547 631800 641628 648960 657072 658080 666306 673920 684450 695097 699840 701952 710775 712920 730080 731200 739206 740340 748800 758160 760448 772330 777600 778752 789696 802035 808704 811200 821340 822600 835396 842400 855504 874800 876096 877440 888408 891150 898560 909792 912600 925425 926796 933120 947700 950560 962442 973440 985608 987120 999459 1010880 1026675 1036800 1044245 1052928 1069380 1081600 1095120 1096800 1110510 1119744 1123200 1137240 1140672 1158495 1166400 1168128 1169920 1184544 1188200 1213056 1216800 1232010 1233900 1235728 1253094 1263600 1283256 1297920 1314144 1316160 1332612 1336725 1347840 1368900 1390194 1399680 1421550 1425840 1443663 1460160 1462400 1478412 1480680 1497600 1516320 1520896 1544660 1555200 1579392 1604070 1617408 1622400 1642680 1645200 1665765 1670792 1684800 1711008 1749600 1752192 1754880 1776816 1782300 1819584 1825200 1848015 1850850 1853592 1866240 1879641 1895400 1901120 1924884 1930825 1946880 1971216 1974240 1998918 2021760 2053350 2085291 2088490 2105856 2138760 2163200 2190240 2193600 2221020 2246400 2274480 2281344 2316990 2332800 2336256 2369088 2376400 2406105 2426112 2433600 2464020 2467800 2471456 2506188 2527200 2566512 2628288 2632320 2665224 2673450 2695680 2715037 2737800 2776275 2780388 2799360 2843100 2851680 2887326 2920320 2924800 2956824 2961360 3032640 3041792 3080025 3089320 3110400 3132735 3158784 3208140 3244800 3285360 3290400 3331530 3341584 3369600 3422016 3475485 3499200 3504384 3509760 3553632 3564600 3639168 3650400 3696030 3701700 3707184 3759282 3790800 3802240 3849768 3861650 3893760 3942432 3948480 3997836 4010175 4043520 4106700 4170582 4176980 4277520 4330989 4380480 4387200 4442040 4492800 4548960 4562688 4633980 4665600 4738176 4752800 4812210 4852224 4867200 4928040 4935600 4942912 4997295 5012376 5054400 5133024 5221225 5256576 5264640 5330448 5346900 5430074 5475600 5552550 5560776 5598720 5638923 5686200 5703360 5774652 5792475 5840640 5849600 5913648 5922720 6065280 6160050 6178640 6255873 6265470 6317568 6416280 6489600 6570720 6580800 6663060 6683168 6739200 6844032 6950970 6998400 7008768 7107264 7129200 7218315 7278336 7300800 7392060 7403400 7414368 7518564 7581600 7604480 7699536 7723300 7884864 7896960 7995672 8020350 8087040 8145111 8213400 8328825 8341164 8353960 8555040 8661978 8760960 8774400 8884080 9097920 9125376 9240075 9267960 9331200 9398205 9476352 9505600 9624420 9734400 9856080 9871200 9885824 9994590 10024752 10108800 10266048 10426455 10442450 10513152 10529280 10660896 10693800 10860148 10951200 11105100 11121552 11277846 11372400 11406720 11549304 11584950 11681280 11827296 11845440 12030525 12130560 12320100 12357280 12511746 12530940 12832560 12992967 13141440 13161600 13326120 13366336 13478400 13575185 13688064 13901940 13996800 14214528 14258400 14436630 14556672 14601600 14784120 14806800 14828736 15037128 15163200 15208960 15399072 15446600 15663675 15769728 15793920 15991344 16040700 16290222 16426800 16657650 16682328 16707920 16916769 17110080 17323956 17377425 17521920 17548800 17768160 18195840 18480150 18535920 18767619 18796410 18952704 19011200 19248840 19468800 19712160 19742400 19771648 19989180 20049504 20217600 20532096 20852910 20884900 21026304 21321792 21387600 21654945 21720296 21902400 22210200 22243104 22555692 22744800 22813440 23098608 23169900 23654592 23690880 24061050 24261120 24435333 24640200 24714560 24986475 25023492 25061880 25665120 25985934 26282880 26323200 26652240 26732672 27150370 27376128 27803880 27993600 28194615 28429056 28516800 28873260 29203200 29568240 29613600 29657472 30074256 30326400 30798144 30893200 31279365 31327350 31539456 31587840 31982688 32081400 32580444 32853600 33315300 33364656 33415840 33833538 34220160 34647912 34754850 35043840 35295481 35536320 36091575 36391680 36960300 37071840 37535238 37592820 38022400 38497680 39424320 39484800 39543296 39978360 40099008 40435200 40725555 41064192 41705820 41769800 42643584 42775200 43309890 43440592 43804800 44420400 44486208 45111384 45489600 45626880 46197216 46339800 46991025 47309184 47381760 48122100 48870666 49280400 49429120 49972950 50046984 50123760 50750307 51330240 51971868 52132275 52565760 52646400 53304480 53465344 54300740 55607760 56302857 56389230 56858112 57033600 57746520 58406400 59136480 59227200 59314944 60148512 60652800 61596288 61786400 62558730 62654700 63078912 63965376 64162800 64964835 65160888 65707200 66630600 66729312 66831680 67667076 67875925 68440320 69295824 69509700 70590962 71072640 72183150 72783360 73305999 73920600 74143680 75070476 75185640 76044800 76995360 78848640 78969600 79956720 80198016 81451110 82128384 83411640 83539600 84583845 85287168 85550400 86619780 86881184 87609600 88840800 88972416 90222768 90979200 92394432 92679600 93838095 93982050 94618368 94763520 96244200 97741332 98560800 98858240 99945900 100093968 100247520 101500614 102660480 103943736 104264550 105131520 105886443 106608960 106930688 108274725 108601480 111215520 112605714 112778460 114067200 115493040 118272960 118454400 118629888 120297024 121305600 122176665 123192576 123572800 125117460 125309400 127930752 128325600 129929670 130321776 131414400 133261200 133458624 133663360 135334152 135751850 136880640 138591648 139019400 140973075 141181924 142145280 144366300 146611998 147841200 148287360 150140952 150371280 152250921 153990720 156396825 157697280 157939200 159913440 160396032 162902220 166823280 167079200 168908571 169167690 170574336 171100800 173239560 173762368 175219200 176477405 177681600 177944832 180445536 181958400 184788864 185359200 187676190 187964100 189236736 192488400 195482664 197121600 197716480 199891800 200187936 200495040 203001228 203627775 205320960 207887472 208529100 211772886 213217920 216549450 217202960 219917997 222431040 225211428 225556920 228134400 230986080 236545920 236908800 240594048 244353330 246385152 247145600 250234920 250618800 253751535 255861504 256651200 259859340 260643552 262828800 266522400 266917248 267326720 270668304 271503700 277183296 278038800 281514285 281946150 282363848 284290560 288732600 293223996 295682400 296574720 300281904 300742560 304501842 307981440 312793650 315394560 317659329 319826880 320792064 324824175 325804440 333646560 334158400 337817142 338335380 342201600 346479120 347524736 352954810 355363200 355889664 360891072 363916800 366529995 369577728 370718400 375352380 375928200 384976800 390965328 394243200 399783600 400375872 400990080 406002456 407255550 410641920 415774944 417058200 422919225 423545772 426435840 433098900 434405920 439835994 444862080 450422856 451113840 456752763 461972160 469190475 473091840 473817600 481188096 488706660 494291200 500469840 501237600 507503070 511723008 513302400 519718680 521287104 525657600 529432215 533044800 533834496 534653440 541336608 543007400 554366592 556077600 563028570 563892300 564727696 577465200 586447992 591364800 593149440 600563808 601485120 609003684 610883325 615962880 625587300 635318658 639653760 649648350 651608880 659753991 667293120 668316800 675634284 676670760 684403200 692958240 695049472 705909620 710726400 721782144 733059990 739155456 741436800 750704760 751856400 761254605 769953600 781930656 788486400 799567200 800751744 801980160 812004912 814511100 831549888 834116400 844542855 845838450 847091544 852871680 866197800 868811840 879671988 882387025 889724160 900845712 902227680 913505526 923944320 938380950 946183680 952977987 962376192 977413320 988582400 1000939680 1002475200 1015006140 1026604800 1039437360 1042574208 1058864430 1066089600 1067668992 1082673216 1086014800 1099589985 1108733184 1112155200 1126057140 1127784600 1129455392 1154930400 1172895984 1182729600 1201127616 1202970240 1218007368 1221766650 1231925760 1251174600 1268757675 1270637316 1279307520 1299296700 1303217760 1319507982 1334586240 1336633600 1351268568 1353341520 1385916480 1390098944 1407571425 1411819240 1421452800 1443564288 1466119980 1482873600 1501409520 1503712800 1522509210 1539907200 1563861312 1576972800 1588296645 1599134400 1601503488 1603960320 1624009824 1629022200 1663099776 1668232800 1689085710 1691676900 1694183088 1732395600 1737623680 1759343976 1764774050 1779448320 1801691424 1804455360 1827011052 1832649975 1847888640 1876761900 1905955974 1954826640 1979261973 2001879360 2004950400 2030012280 2053209600 2078874720 2085148416 2117728860 2132179200 2165346432 2172029600 2199179970 2217466368 2224310400 2252114280 2255569200 2258910784 2283763815 2309860800 2345791968 2365459200 2402255232 2405940480 2436014736 2443533300 2502349200 2537515350 2541274632 2558615040 2598593400 2606435520 2639015964 2647161075 2669172480 2673267200 2702537136 2706683040 2771832960 2815142850 2823638480 2858933961 2887128576 2932239960 2965747200 3002819040 3007425600 3045018420 3079814400 3127722624 3176593290 3198268800 3203006976 3248019648 3258044400 3298769955 3326199552 3336465600 3378171420 3383353800 3388366176 3464791200 3475247360 3518687952 3529548100 3603382848 3608910720 3654022104 3665299950 3695777280 3753523800 3806273025 3811911948 3909653280 3958523946 4003758720 4009900800 4060024560 4157749440 4170296832 4222714275 4235457720 4264358400 4330692864 4344059200 4398359940 4448620800 4504228560 4511138400 4517821568 4567527630 4619721600 4691583936 4730918400 4764889935 4804510464 4811880960 4872029472 4887066600 5004698400 5075030700 5082549264 5197186800 5212871040 5278031928 5294322150 5338344960 5405074272 5413366080 5497949925 5543665920 5630285700 5647276960 5717867922 5864479920 5937785919 6005638080 6014851200 6090036840 6159628800 6255445248 6353186580 6396537600 6496039296 6516088800 6597539910 6652399104 6672931200 6756342840 6766707600 6776732352 6929582400 6950494720 7037375904 7059096200 7206765696 7217821440 7308044208 7330599900 7507047600 7612546050 7623823896 7819306560 7917047892 7941483225 8007517440 8019801600 8120049120 8315498880 8445428550 8470915440 8576801883 8661385728 8688118400 8796719880 8897241600 9008457120 9022276800 9035643136 9135055260 9239443200 9383167872 9529779870 9609020928 9744058944 9774133200 9896309865 10009396800 10150061400 10165098528 10394373600 10425742080 10556063856 10588644300 10810148544 10826732160 10995899850 11087331840 11260571400 11294553920 11418819075 11435735844 11728959840 11875571838 12011276160 12029702400 12180073680 12510890496 12706373160 12793075200 12992078592 13032177600 13195079820 13345862400 13512685680 13533415200 13553464704 13859164800 14074751808 14118192400 14294669805 14413531392 14435642880 14616088416 14661199800 15014095200 15225092100 15247647792 15638613120 15834095784 15882966450 16015034880 16240098240 16493849775 16630997760 16890857100 16941830880 17153603766 17376236800 17593439760 18016914240 18044553600 18071286272 18270110520 18478886400 18766335744 19059559740 19488117888 19548266400 19792619730 20018793600 20300122800 20330197056 20788747200 20851484160 21112127712 21177288600 21620297088 21653464320 21991799700 22521142800 22589107840 22837638150 22871471688 23457919680 23751143676 23824449675 24022552320 24059404800 24360147360 25412746320 25730405649 25984157184 26064355200 26390159640 26691724800 27025371360 27066830400 27106929408 27718329600 28149503616 28236384800 28589339610 28827062784 29232176832 29322399600 29688929595 30028190400 30450184200 30495295584 31277226240 31668191568 31765932900 32480196480 32987699550 33261995520 33781714200 33883661760 34307207532 34752473600 35186879520 36033828480 36089107200 36540221040 37532671488 38119119480 38976235776 39096532800 39585239460 40037587200 40600245600 40660394112 41577494400 42224255424 42354577200 42884009415 43240594176 43306928640 43983599400 45042285600 45178215680 45675276300 45742943376 46915839360 47502287352 47648899350 48045104640 48720294720 49481549325 50825492640 51460811298 52128710400 52780319280 54050742720 54133660800 54213858816 55436659200 56299007232 56472769600 57178679220 58464353664 58644799200 59377859190 60056380800 60900368400 60990591168 62554452480 63336383136 63531865800 64960392960 65975399100 67563428400 67767323520 68614415064 70373759040 71473349025 72067656960 72178214400 73080442080 76238238960 77191216947 77952471552 78193065600 79170478920 80075174400 81200491200 81320788224 83154988800 84448510848 84709154400 85768018830 86481188352 87967198800 90084571200 90356431360 91350552600 91485886752 93831678720 95004574704 95297798700 97440589440 98963098650 101650985280 102921622596 104257420800 105560638560 108101485440 108267321600 112598014464 112945539200 114357358440 116928707328 117289598400 118755718380 120112761600 121800736800 121981182336 126672766272 127063731600 128652028245 129920785920 131950798200 135126856800 135534647040 137228830128 140747518080 142946698050 144135313920 146160884160 148444647975 152476477920 154382433894 156386131200 158340957840 162400982400 162641576448 166309977600 168897021696 169418308800 171536037660 175934397600 180169142400 182701105200 182971773504 187663357440 190009149408 190595597400 194881178880 197926197300 203301970560 205843245192 211121277120 214420047075 216202970880 216534643200 225891078400 228714716880 233857414656 234579196800 237511436760 240225523200 243601473600 243962364672 253345532544 254127463200 257304056490 263901596400 270253713600 271069294080 274457660256 281495036160 285893396100 292321768320 296889295950 304952955840 308764867788 312772262400 316681915680 324801964800 337794043392 338836617600 343072075320 351868795200 360338284800 365402210400 365943547008 380018298816 381191194800 385956084735 389762357760 395852394600 406603941120 411686490384 422242554240 428840094150 432405941760 451782156800 457429433760 469158393600 475022873520 487202947200 487924729344 506691065088 508254926400 514608112980 527803192800 540507427200 548915320512 562990072320 571786792200 584643536640 593778591900 609905911680 617529735576 633363831360 643260141225 649603929600 677673235200 686144150640 703737590400 720676569600 730804420800 731887094016 760036597632 762382389600 771912169470 791704789200 813207882240 823372980768 844485108480 857680188300 914858867520 938316787200 950045747040 974405894400 1013382130176 1016509852800 1029216225960 1055606385600 1081014854400 1097830641024 1143573584400 1169287073280 1187557183800 1219811823360 1235059471152 1266727662720 1286520282450 1355346470400 1372288301280 1407475180800 1461608841600 1463774188032 1520073195264 1524764779200 1543824338940 1583409578400 1646745961536 1688970216960 1715360376600 1829717735040 1900091494080 1929780423675 1948811788800 2033019705600 2058432451920 2111212771200 2162029708800 2195661282048 2287147168800 2375114367600 2439623646720 2470118942304 2533455325440 2573040564900 2744576602560 2814950361600 2923217683200 3040146390528 3049529558400 3087648677880 3166819156800 3293491923072 3430720753200 3659435470080 3800182988160 3859560847350 4066039411200 4116864903840 4222425542400 4391322564096 4574294337600 4750228735200 4940237884608 5066910650880 5146081129800 5489153205120 5846435366400 6099059116800 6175297355760 6333638313600 6586983846144 6861441506400 7318870940160 7600365976320 7719121694700 8233729807680 8444851084800 9148588675200 9500457470400 9880475769216 10292162259600 10978306410240 12198118233600 12350594711520 12667276627200 13173967692288 13722883012800 15200731952640 15438243389400 16467459615360 18297177350400 19000914940800 19760951538432 20584324519200 21956612820480 24701189423040 25334553254400 27445766025600 30876486778800 32934919230720 36594354700800 38001829881600 39521903076864 41168649038400 49402378846080 54891532051200 61752973557600 65869838461440 76003659763200 82337298076800 98804757692160 109783064102400 123505947115200 164674596153600 197609515384320 247011894230400 329349192307200 494023788460800 988047576921600
- Sum of all divisors σ(n): 3984244795293840
- Sum of proper divisors (its aliquot sum) s(n): 2996197218372240
- 988047576921600 is an abundant number, because the sum of its proper divisors (2996197218372240) is greater than itself. Its abundance is 2008149641450640
Bases of 988047576921600
- Binary: 111000001010011111110000001101011111110110000000002
- Hexadecimal: 0x3829FC0D7F600
- Base-36: 9Q8ESGO000
Squares and roots of 988047576921600
- 988047576921600 squared (9880475769216002) is 976238014260645068932546560000
- 988047576921600 cubed (9880475769216003) is 964569604488984746497766031643373469696000000
-
The
square root of 988047576921600 is 31433224.0936496999 -
The
cube root of 988047576921600 is 99599.9879343867
Scales and comparisons
How big is 988047576921600?- 988,047,576,921,600 seconds is equal to 31,416,856 years, 37 weeks, 1 day.
-
To count from 1 to 988,047,576,921,600 would take you about seventy-eight million, five hundred forty-two thousand, one hundred forty-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 988047576921600 cubic inches would be around 8300 feet tall.
Recreational maths with 988047576921600
- 988047576921600 backwards is 006129675740889
- 988047576921600 is a
Harshad number . - The number of decimal digits it has is: 15
- The sum of 988047576921600'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 988047576921600 - Facts about the integer". Numbermatics.com. 2024. Web. 14 June 2024.
APA style:
Numbermatics. (2024). Number 988047576921600 - Facts about the integer. Retrieved 14 June 2024, from https://numbermatics.com/n/988047576921600/
Chicago style:
Numbermatics. 2024. "Number 988047576921600 - Facts about the integer". https://numbermatics.com/n/988047576921600/
The information we have on file for 988047576921600 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 988047576921600, math, Factors of 988047576921600, curriculum, school, college, exams, university, Prime factorization of 988047576921600, STEM, science, technology, engineering, physics, economics, calculator, nine hundred eighty-eight trillion, forty-seven billion, five hundred seventy-six million, nine hundred twenty-one thousand, six hundred.