7152680640000
7,152,680,640,000 is an even composite number composed of seven prime numbers multiplied together.
7152680640000 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, four hundred divisors.
Prime factorization of 7152680640000:
29 × 3 × 54 × 7 × 172 × 29 × 127
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 5 × 5 × 7 × 17 × 17 × 29 × 127)See below for interesting mathematical facts about the number 7152680640000 from the Numbermatics database.
Names of 7152680640000
- Cardinal: 7152680640000 can be written as Seven trillion, one hundred fifty-two billion, six hundred eighty million, six hundred forty thousand.
Scientific notation
- Scientific notation: 7.15268064 × 1012
Factors of 7152680640000
Divisors of 7152680640000
- Number of divisors d(n): 2400
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 17 20 21 24 25 28 29 30 32 34 35 40 42 48 50 51 56 58 60 64 68 70 75 80 84 85 87 96 100 102 105 112 116 119 120 125 127 128 136 140 145 150 160 168 170 174 175 192 200 203 204 210 224 232 238 240 250 254 255 256 272 280 289 290 300 320 336 340 348 350 357 375 381 384 400 406 408 420 425 435 448 464 476 480 493 500 508 510 512 525 544 560 578 580 595 600 609 625 635 640 672 680 696 700 714 725 750 762 768 800 812 816 840 850 867 870 875 889 896 928 952 960 986 1000 1015 1016 1020 1050 1088 1120 1156 1160 1190 1200 1218 1250 1270 1275 1280 1344 1360 1392 1400 1428 1445 1450 1479 1500 1524 1536 1600 1624 1632 1680 1700 1734 1740 1750 1778 1785 1792 1856 1875 1904 1905 1920 1972 2000 2023 2030 2032 2040 2100 2125 2159 2175 2176 2240 2312 2320 2380 2400 2436 2465 2500 2540 2550 2560 2625 2667 2688 2720 2784 2800 2856 2890 2900 2958 2975 3000 3045 3048 3175 3200 3248 3264 3360 3400 3451 3468 3480 3500 3556 3570 3584 3625 3683 3712 3750 3808 3810 3840 3944 4000 4046 4060 4064 4080 4200 4250 4318 4335 4350 4352 4375 4445 4480 4624 4640 4760 4800 4872 4930 5000 5075 5080 5100 5250 5334 5376 5440 5568 5600 5712 5780 5800 5916 5950 6000 6069 6090 6096 6350 6375 6400 6477 6496 6528 6720 6800 6902 6936 6960 7000 7112 7140 7225 7250 7366 7395 7424 7500 7616 7620 7680 7888 8000 8092 8120 8128 8160 8381 8400 8500 8636 8670 8700 8704 8750 8890 8925 8960 9248 9280 9520 9525 9600 9744 9860 10000 10115 10150 10160 10200 10353 10500 10625 10668 10752 10795 10875 10880 11049 11136 11200 11424 11560 11600 11832 11900 12000 12138 12180 12192 12325 12700 12750 12800 12954 12992 13056 13125 13335 13440 13600 13804 13872 13920 14000 14224 14280 14450 14500 14732 14790 14848 14875 15000 15113 15225 15232 15240 15776 15875 16000 16184 16240 16256 16320 16762 16800 17000 17255 17272 17340 17400 17500 17780 17850 17920 18125 18415 18496 18560 19040 19050 19200 19488 19720 20000 20230 20300 20320 20400 20706 21000 21250 21336 21590 21675 21750 21760 22098 22225 22272 22400 22848 23120 23200 23664 23800 24000 24276 24360 24384 24650 25143 25375 25400 25500 25781 25908 25984 26112 26250 26670 26880 27200 27608 27744 27840 28000 28448 28560 28900 29000 29464 29580 29750 30000 30226 30345 30450 30464 30480 31552 31750 31875 32000 32368 32385 32480 32512 32640 33524 33600 34000 34510 34544 34680 34800 35000 35560 35700 36125 36250 36703 36830 36975 36992 37120 38080 38100 38400 38976 39440 40000 40460 40600 40640 40800 41412 41905 42000 42500 42672 43180 43350 43500 43520 44196 44450 44544 44625 44800 45339 45696 46240 46400 47328 47600 47625 48000 48552 48720 48768 49300 50286 50575 50750 50800 51000 51562 51765 51816 51968 52500 53340 53760 53975 54375 54400 55216 55245 55488 55680 56000 56896 57120 57800 58000 58667 58928 59160 59500 60000 60452 60690 60900 60928 60960 61625 62611 63104 63500 63750 64000 64736 64770 64960 65024 65280 66675 67048 67200 68000 69020 69088 69360 69600 70000 71120 71400 72250 72500 73406 73660 73950 73984 74240 74375 75565 76125 76160 76200 77343 77952 78880 79375 80000 80920 81200 81280 81600 82824 83810 84000 85000 85344 86275 86360 86700 87000 88392 88900 89250 89600 90678 91392 92075 92480 92800 94656 95200 95250 96000 97104 97440 97536 98600 100572 101150 101500 101600 102000 103124 103530 103632 103936 105000 106680 107950 108375 108750 108800 110109 110432 110490 110976 111125 111360 112000 113792 114240 115600 116000 117334 117856 118320 119000 120000 120904 121380 121800 121920 123250 125222 125715 126208 126875 127000 127500 128905 129472 129540 129920 130560 133350 134096 134400 136000 138040 138176 138720 139200 140000 142240 142800 144500 145000 146812 147320 147900 147968 148750 151130 151725 152250 152320 152400 154686 155904 157760 158750 160000 161840 161925 162400 162560 163200 165648 167620 168000 170000 170688 172550 172720 173400 174000 176001 176784 177800 178500 180625 181356 182784 183515 184150 184875 184960 185600 187833 189312 190400 190500 192000 194208 194880 195072 197200 201144 202300 203000 203200 204000 206248 207060 207264 209525 210000 213360 215900 216750 217500 217600 220218 220864 220980 221952 222250 222720 223125 224000 226695 227584 228480 231200 232000 234668 235712 236640 238000 238125 240000 241808 242760 243600 243840 246500 250444 251430 252416 252875 253750 254000 255000 256921 257810 258825 258944 259080 259840 266700 268192 268800 269875 272000 276080 276225 276352 277440 278400 280000 284480 285600 289000 290000 293335 293624 294640 295800 297500 302260 303450 304500 304640 304800 308125 309372 311808 313055 315520 317500 320000 323680 323850 324800 325120 326400 331296 333375 335240 336000 340000 341376 345100 345440 346800 348000 352002 353568 355600 357000 361250 362712 367030 368300 369750 369920 371200 375666 377825 378624 380625 380800 381000 386715 388416 389760 394400 402288 404600 406000 406400 408000 412496 414120 414528 419050 420000 426720 431375 431800 433500 435000 438277 440436 441728 441960 443904 444500 446250 448000 453390 455168 456960 460375 462400 464000 469336 471424 473280 476000 476250 480000 483616 485520 487200 487680 493000 500888 502860 505750 507500 508000 510000 513842 515620 517650 517888 518160 519680 533400 536384 539750 541875 544000 550545 552160 552450 552704 554880 555625 556800 560000 568960 571200 578000 580000 586670 587248 589280 591600 595000 604520 606900 609000 609600 616250 618744 626110 628575 631040 635000 644525 647360 647700 649600 652800 662592 666750 670480 672000 680000 682752 690200 690880 693600 696000 704004 707136 711200 714000 722500 725424 734060 736600 739500 739840 751332 755650 757248 758625 761250 761600 762000 770763 773430 776832 779520 788800 804576 809200 809625 812000 812800 816000 824992 828240 829056 838100 840000 853440 862750 863600 867000 870000 876554 880005 880872 883456 883920 889000 892500 906780 913920 917575 920750 924375 924800 928000 938672 939165 942848 946560 952000 952500 960000 967232 971040 974400 975360 986000 1001776 1005720 1011500 1015000 1016000 1020000 1027684 1031240 1035300 1035776 1036320 1047625 1064387 1066800 1072768 1079500 1083750 1088000 1101090 1104320 1104900 1105408 1109760 1111250 1113600 1120000 1133475 1137920 1142400 1156000 1160000 1173340 1174496 1178560 1183200 1190000 1209040 1213800 1218000 1219200 1232500 1237488 1252220 1257150 1262080 1264375 1270000 1284605 1289050 1294125 1294720 1295400 1299200 1314831 1325184 1333500 1340960 1344000 1349375 1360000 1365504 1380400 1381125 1381760 1387200 1392000 1408008 1414272 1422400 1428000 1445000 1450848 1466675 1468120 1473200 1479000 1502664 1511300 1517250 1522500 1523200 1524000 1541526 1546860 1553664 1559040 1565275 1577600 1609152 1618400 1619250 1624000 1625600 1632000 1649984 1656480 1658112 1666875 1676200 1680000 1706880 1725500 1727200 1734000 1740000 1753108 1760010 1761744 1766912 1767840 1778000 1785000 1813560 1835150 1841500 1848750 1849600 1856000 1877344 1878330 1885696 1889125 1893120 1904000 1905000 1933575 1934464 1942080 1948800 1972000 2003552 2011440 2023000 2030000 2032000 2040000 2055368 2062480 2070600 2072640 2095250 2128774 2133600 2145536 2156875 2159000 2167500 2191385 2202180 2208640 2209800 2219520 2222500 2240000 2266950 2275840 2284800 2301875 2312000 2320000 2346680 2348992 2357120 2366400 2380000 2418080 2427600 2436000 2438400 2465000 2474976 2504440 2514300 2528750 2540000 2569210 2578100 2588250 2589440 2590800 2598400 2629662 2650368 2667000 2681920 2698750 2720000 2752725 2760800 2762250 2763520 2774400 2784000 2816016 2828544 2844800 2856000 2890000 2901696 2933350 2936240 2946400 2958000 3005328 3022600 3034500 3045000 3048000 3083052 3093720 3107328 3130550 3142875 3155200 3193161 3218304 3222625 3236800 3238500 3248000 3264000 3299968 3312960 3316224 3333750 3352400 3360000 3413760 3451000 3454400 3468000 3480000 3506216 3520020 3523488 3535680 3556000 3570000 3627120 3670300 3683000 3697500 3699200 3754688 3756660 3778250 3786240 3793125 3808000 3810000 3853815 3867150 3868928 3884160 3897600 3944000 4007104 4022880 4046000 4048125 4060000 4064000 4080000 4110736 4124960 4141200 4145280 4190500 4257548 4267200 4291072 4313750 4318000 4335000 4382770 4400025 4404360 4417280 4419600 4445000 4533900 4569600 4587875 4603750 4624000 4640000 4693360 4695825 4697984 4714240 4732800 4760000 4836160 4855200 4872000 4876800 4930000 4949952 5008880 5028600 5057500 5080000 5138420 5156200 5176500 5178880 5181600 5238125 5259324 5300736 5321935 5334000 5363840 5397500 5440000 5505450 5521600 5524500 5527040 5548800 5568000 5632032 5657088 5667375 5689600 5712000 5780000 5803392 5866700 5872480 5892800 5916000 6010656 6045200 6069000 6090000 6096000 6166104 6187440 6261100 6285750 6310400 6386322 6423025 6436608 6445250 6470625 6473600 6477000 6496000 6574155 6599936 6625920 6667500 6704800 6720000 6827520 6902000 6905625 6908800 6936000 6960000 7012432 7040040 7046976 7071360 7112000 7140000 7254240 7333375 7340600 7366000 7395000 7450709 7509376 7513320 7556500 7586250 7616000 7620000 7707630 7734300 7737856 7768320 7795200 7826375 7888000 8014208 8045760 8092000 8096250 8120000 8128000 8160000 8221472 8249920 8282400 8290560 8381000 8515096 8534400 8627500 8636000 8670000 8765540 8800050 8808720 8834560 8839200 8890000 9067800 9175750 9207500 9248000 9280000 9386720 9391650 9395968 9428480 9445625 9465600 9520000 9667875 9672320 9710400 9744000 9860000 9899904 10017760 10057200 10115000 10160000 10276840 10312400 10353000 10363200 10476250 10518648 10643870 10668000 10727680 10795000 10956925 11010900 11043200 11049000 11097600 11264064 11334750 11379200 11424000 11560000 11606784 11733400 11744960 11785600 11832000 12021312 12090400 12138000 12180000 12192000 12332208 12374880 12522200 12571500 12772644 12846050 12873216 12890500 12941250 12947200 12954000 12992000 13148310 13199872 13251840 13335000 13409600 13763625 13804000 13811250 13817600 13872000 13920000 14024864 14080080 14093952 14142720 14224000 14280000 14508480 14666750 14681200 14732000 14790000 14901418 15018752 15026640 15113000 15172500 15240000 15415260 15468600 15536640 15652750 15714375 15776000 15965805 16028416 16091520 16113125 16184000 16192500 16240000 16320000 16442944 16499840 16564800 16581120 16762000 17030192 17068800 17255000 17272000 17340000 17531080 17600100 17617440 17678400 17780000 18135600 18351500 18415000 18496000 18773440 18783300 18791936 18891250 18931200 19040000 19269075 19335750 19344640 19420800 19488000 19720000 19799808 20035520 20114400 20230000 20320000 20553680 20624800 20706000 20726400 20952500 21037296 21287740 21336000 21455360 21590000 21913850 22000125 22021800 22086400 22098000 22352127 22528128 22669500 22848000 22939375 23120000 23213568 23466800 23479125 23489920 23571200 23664000 24042624 24180800 24276000 24360000 24384000 24664416 24749760 25044400 25143000 25545288 25692100 25781000 25882500 25894400 25908000 26296620 26503680 26609675 26670000 26819200 27527250 27608000 27622500 27635200 27744000 27840000 28049728 28160160 28187904 28285440 28336875 28448000 28560000 29016960 29333500 29362400 29464000 29580000 29802836 30037504 30053280 30226000 30345000 30480000 30830520 30937200 31305500 31428750 31552000 31931610 32056832 32115125 32183040 32226250 32368000 32385000 32480000 32870775 32885888 32999680 33129600 33524000 34060384 34137600 34510000 34544000 34680000 35062160 35200200 35234880 35356800 35560000 36271200 36666875 36703000 36830000 37253545 37546880 37566600 37782500 38080000 38538150 38671500 38689280 38841600 38976000 39131875 39440000 39599616 40071040 40228800 40460000 40640000 41107360 41249600 41412000 41452800 41905000 42074592 42575480 42672000 43180000 43827700 44000250 44043600 44172800 44196000 44704254 45056256 45339000 45878750 46240000 46933600 46958250 46979840 47142400 47328000 48085248 48339375 48361600 48552000 48720000 49328832 49499520 50088800 50286000 51090576 51384200 51562000 51765000 51816000 52593240 53219350 53340000 53638400 54784625 55054500 55216000 55245000 55488000 56099456 56320320 56375808 56673750 56896000 57120000 58033920 58667000 58724800 58928000 59160000 59605672 60106560 60452000 60690000 60960000 61661040 61874400 62611000 62857500 63863220 64230250 64366080 64452500 64736000 64770000 64960000 65741550 65771776 65999360 66259200 67048000 68120768 68818125 69020000 69088000 69360000 70124320 70400400 70469760 70713600 71120000 72542400 73333750 73406000 73660000 74507090 75093760 75133200 75565000 77076300 77343000 77683200 78263750 78880000 79829025 80142080 80457600 80920000 82214720 82499200 82824000 82905600 83810000 84149184 85150960 85344000 86360000 87655400 88000500 88087200 88392000 89408508 90112512 90678000 91757500 92480000 93867200 93916500 93959680 94656000 96170496 96345375 96678750 96723200 97104000 97440000 98657664 98999040 100177600 100572000 102181152 102768400 103124000 103530000 103632000 105186480 106438700 106680000 107276800 109569250 110000625 110109000 110432000 110490000 111760635 112198912 112640640 113347500 114240000 116067840 117334000 117395625 117449600 117856000 118320000 119211344 120213120 120904000 121380000 121920000 123322080 123748800 125222000 125715000 127726440 128460500 128905000 129472000 129540000 131483100 131543552 132518400 133048375 134096000 136241536 137636250 138040000 138176000 138720000 140248640 140800800 140939520 141427200 142240000 145084800 146667500 146812000 147320000 149014180 150187520 150266400 151130000 154152600 154686000 156527500 157760000 159658050 160284160 160575625 160915200 161840000 164353875 164429440 164998400 165648000 167620000 168298368 170301920 170688000 172720000 175310800 176001000 176174400 176784000 178817016 181356000 183515000 186267725 187734400 187833000 192690750 193357500 193446400 194208000 194880000 197315328 197998080 200355200 201144000 204362304 205536800 206248000 207060000 207264000 210372960 212877400 213360000 219138500 220001250 220218000 220864000 220980000 223521270 224397824 225281280 226695000 234668000 234791250 234899200 235712000 236640000 238422688 240426240 241808000 242760000 246644160 247497600 250444000 251430000 255452880 256921000 257810000 259080000 262966200 266096750 268192000 272483072 273923125 275272500 276080000 277440000 280497280 281601600 281879040 284480000 290169600 293335000 293624000 294640000 298028360 300532800 302260000 308305200 309372000 313055000 319316100 321151250 321830400 323680000 328707750 328858880 329996800 331296000 335240000 336596736 340603840 345440000 350621600 352002000 352348800 353568000 357634032 362712000 367030000 372535450 375468800 375666000 385381500 386715000 388416000 394630656 399145125 400710400 402288000 408724608 411073600 412496000 414120000 414528000 420745920 425754800 426720000 438277000 440002500 440436000 441960000 447042540 450562560 453390000 469336000 469582500 469798400 473280000 476845376 480852480 481726875 483616000 485520000 493288320 494995200 500888000 502860000 510905760 513842000 515620000 518160000 525932400 532193500 536384000 544966144 547846250 550545000 552160000 558803175 560994560 563203200 580339200 586670000 587248000 589280000 596056720 601065600 604520000 616610400 618744000 626110000 638632200 642302500 647360000 657415500 657717760 662592000 665241875 670480000 673193472 681207680 690880000 701243200 704004000 704697600 707136000 715268064 725424000 734060000 745070900 750937600 751332000 770763000 773430000 798290250 801420800 804576000 817449216 821769375 822147200 824992000 828240000 841491840 851509600 853440000 876554000 880005000 880872000 883920000 894085080 906780000 931338625 938672000 939165000 953690752 963453750 967232000 971040000 986576640 989990400 1001776000 1005720000 1021811520 1027684000 1031240000 1036320000 1051864800 1064387000 1095692500 1101090000 1104320000 1117606350 1121989120 1126406400 1173340000 1174496000 1178560000 1192113440 1202131200 1209040000 1233220800 1237488000 1252220000 1277264400 1284605000 1314831000 1330483750 1340960000 1362415360 1402486400 1408008000 1409395200 1430536128 1450848000 1468120000 1490141800 1502664000 1541526000 1546860000 1596580500 1609152000 1634898432 1643538750 1644294400 1649984000 1656480000 1682983680 1703019200 1753108000 1760010000 1761744000 1767840000 1788170160 1813560000 1862677250 1877344000 1878330000 1907381504 1926907500 1942080000 1973153280 1995725625 2003552000 2011440000 2043623040 2055368000 2062480000 2072640000 2103729600 2128774000 2191385000 2202180000 2235212700 2252812800 2346680000 2348992000 2384226880 2404262400 2418080000 2466441600 2474976000 2504440000 2554528800 2569210000 2629662000 2660967500 2681920000 2724830720 2794015875 2804972800 2816016000 2861072256 2901696000 2936240000 2980283600 3005328000 3083052000 3093720000 3193161000 3287077500 3288588800 3312960000 3365967360 3406038400 3506216000 3520020000 3523488000 3535680000 3576340320 3627120000 3725354500 3754688000 3756660000 3814763008 3853815000 3991451250 4007104000 4022880000 4087246080 4110736000 4124960000 4207459200 4257548000 4382770000 4404360000 4470425400 4656693125 4693360000 4768453760 4836160000 4932883200 4949952000 5008880000 5109057600 5138420000 5259324000 5321935000 5588031750 5609945600 5632032000 5722144512 5872480000 5960567200 6010656000 6166104000 6187440000 6386322000 6574155000 6812076800 7012432000 7040040000 7046976000 7152680640 7254240000 7450709000 7513320000 7707630000 7982902500 8045760000 8174492160 8221472000 8249920000 8414918400 8515096000 8765540000 8808720000 8940850800 9313386250 9386720000 9536907520 9865766400 10017760000 10218115200 10276840000 10518648000 10643870000 11176063500 11264064000 11444289024 11744960000 11921134400 12021312000 12332208000 12374880000 12772644000 13148310000 13624153600 13970079375 14024864000 14080080000 14305361280 14508480000 14901418000 15026640000 15415260000 15965805000 16442944000 16829836800 17030192000 17531080000 17617440000 17881701600 18626772500 18773440000 19073815040 20035520000 20436230400 20553680000 21037296000 21287740000 22352127000 23842268800 24664416000 24749760000 25545288000 26296620000 27940158750 28049728000 28160160000 28610722560 29802836000 30053280000 30830520000 31931610000 34060384000 35062160000 35234880000 35763403200 37253545000 40872460800 41107360000 42074592000 42575480000 44704254000 47684537600 49328832000 51090576000 52593240000 55880317500 56320320000 57221445120 59605672000 60106560000 61661040000 63863220000 68120768000 70124320000 71526806400 74507090000 82214720000 84149184000 85150960000 89408508000 95369075200 102181152000 105186480000 111760635000 119211344000 123322080000 127726440000 140248640000 143053612800 149014180000 170301920000 178817016000 204362304000 210372960000 223521270000 238422688000 246644160000 255452880000 286107225600 298028360000 340603840000 357634032000 420745920000 447042540000 476845376000 510905760000 596056720000 715268064000 894085080000 1021811520000 1192113440000 1430536128000 1788170160000 2384226880000 3576340320000 7152680640000
- Sum of all divisors σ(n): 30140208046080
- Sum of proper divisors (its aliquot sum) s(n): 22987527406080
- 7152680640000 is an abundant number, because the sum of its proper divisors (22987527406080) is greater than itself. Its abundance is 15834846766080
Bases of 7152680640000
- Binary: 11010000001010111001111110100011110000000002
- Hexadecimal: 0x6815CFD1E00
- Base-36: 2J9W9DJPC
Squares and roots of 7152680640000
- 7152680640000 squared (71526806400002) is 51160840337830809600000000
- 7152680640000 cubed (71526806400003) is 365937152210533491421446144000000000000
-
The
square root of 7152680640000 is 2674449.5957112371 -
The
cube root of 7152680640000 is 19267.3925139847
Scales and comparisons
How big is 7152680640000?- 7,152,680,640,000 seconds is equal to 227,433 years, 6 weeks, 1 day, 13 hours, 20 minutes.
-
To count from 1 to 7,152,680,640,000 would take you about five hundred sixty-eight thousand, five hundred eighty-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 7152680640000 cubic inches would be around 1605.6 feet tall.
Recreational maths with 7152680640000
- 7152680640000 backwards is 0000460862517
- The number of decimal digits it has is: 13
- The sum of 7152680640000's digits is 39
- 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 7152680640000 - Facts about the integer". Numbermatics.com. 2024. Web. 31 May 2024.
APA style:
Numbermatics. (2024). Number 7152680640000 - Facts about the integer. Retrieved 31 May 2024, from https://numbermatics.com/n/7152680640000/
Chicago style:
Numbermatics. 2024. "Number 7152680640000 - Facts about the integer". https://numbermatics.com/n/7152680640000/
The information we have on file for 7152680640000 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 7152680640000, math, Factors of 7152680640000, curriculum, school, college, exams, university, Prime factorization of 7152680640000, STEM, science, technology, engineering, physics, economics, calculator, seven trillion, one hundred fifty-two billion, six hundred eighty million, six hundred forty thousand.