17451895500000
17,451,895,500,000 is an even composite number composed of six prime numbers multiplied together.
17451895500000 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand, three hundred fifty-two divisors.
Prime factorization of 17451895500000:
25 × 36 × 56 × 13 × 29 × 127
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 5 × 5 × 5 × 5 × 13 × 29 × 127)See below for interesting mathematical facts about the number 17451895500000 from the Numbermatics database.
Names of 17451895500000
- Cardinal: 17451895500000 can be written as Seventeen trillion, four hundred fifty-one billion, eight hundred ninety-five million, five hundred thousand.
Scientific notation
- Scientific notation: 1.74518955 × 1013
Factors of 17451895500000
Divisors of 17451895500000
- Number of divisors d(n): 2352
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 27 29 30 32 36 39 40 45 48 50 52 54 58 60 65 72 75 78 80 81 87 90 96 100 104 108 116 117 120 125 127 130 135 144 145 150 156 160 162 174 180 195 200 208 216 225 232 234 240 243 250 254 260 261 270 288 290 300 312 324 325 348 351 360 375 377 381 390 400 405 416 432 435 450 464 468 480 486 500 508 520 522 540 580 585 600 624 625 635 648 650 675 696 702 720 725 729 750 754 762 780 783 800 810 864 870 900 928 936 972 975 1000 1016 1040 1044 1053 1080 1125 1131 1143 1160 1170 1200 1215 1248 1250 1270 1296 1300 1305 1350 1392 1404 1440 1450 1458 1500 1508 1524 1560 1566 1620 1625 1651 1740 1755 1800 1872 1875 1885 1905 1944 1950 2000 2025 2032 2080 2088 2106 2160 2175 2250 2262 2286 2320 2340 2349 2400 2430 2500 2540 2592 2600 2610 2700 2784 2808 2900 2916 2925 3000 3016 3048 3120 3125 3132 3159 3175 3240 3250 3302 3375 3393 3429 3480 3510 3600 3625 3645 3683 3744 3750 3770 3810 3888 3900 3915 4000 4050 4064 4176 4212 4320 4350 4500 4524 4572 4640 4680 4698 4860 4875 4953 5000 5080 5200 5220 5265 5400 5616 5625 5655 5715 5800 5832 5850 6000 6032 6075 6096 6240 6250 6264 6318 6350 6480 6500 6525 6604 6750 6786 6858 6960 7020 7047 7200 7250 7290 7366 7500 7540 7620 7776 7800 7830 8100 8125 8255 8352 8424 8700 8775 9000 9048 9144 9360 9375 9396 9425 9477 9525 9720 9750 9906 10000 10125 10160 10179 10287 10400 10440 10530 10800 10875 11049 11232 11250 11310 11430 11600 11664 11700 11745 12000 12064 12150 12192 12500 12528 12636 12700 12960 13000 13050 13208 13500 13572 13716 13920 14040 14094 14500 14580 14625 14732 14859 15000 15080 15240 15600 15625 15660 15795 15875 16200 16250 16510 16848 16875 16965 17145 17400 17550 18000 18096 18125 18225 18288 18415 18720 18750 18792 18850 18954 19050 19440 19500 19575 19812 20000 20250 20320 20358 20574 20880 21060 21141 21600 21750 22098 22500 22620 22860 23200 23328 23400 23490 24300 24375 24765 25000 25056 25272 25400 26000 26100 26325 26416 27000 27144 27432 28080 28125 28188 28275 28575 29000 29160 29250 29464 29718 30000 30160 30375 30480 30537 30861 31200 31250 31320 31590 31750 32400 32500 32625 33020 33147 33696 33750 33930 34290 34800 35100 35235 36000 36192 36250 36450 36576 36830 37500 37584 37700 37908 38100 38880 39000 39150 39624 40500 40625 40716 41148 41275 41760 42120 42282 43500 43875 44196 44577 45000 45240 45720 46800 46875 46980 47125 47385 47625 47879 48600 48750 49530 50000 50544 50625 50800 50895 51435 52000 52200 52650 52832 54000 54288 54375 54864 55245 56160 56250 56376 56550 57150 58000 58320 58500 58725 58928 59436 60000 60320 60750 60960 61074 61722 62500 62640 63180 63500 64800 65000 65250 66040 66294 67500 67860 68580 69600 70200 70470 72500 72900 73125 73660 74295 75000 75168 75400 75816 76200 78000 78300 78975 79248 79375 81000 81250 81432 82296 82550 84240 84375 84564 84825 85725 87000 87750 88392 89154 90000 90480 90625 91125 91440 91611 92075 92583 93600 93750 93960 94250 94770 95250 95758 97200 97500 97875 99060 99441 100000 101088 101250 101600 101790 102870 104400 105300 105705 108000 108576 108750 109728 110490 112500 112752 113100 114300 116000 116640 117000 117450 117856 118872 121500 121875 122148 123444 123825 125000 125280 126360 127000 130000 130500 131625 132080 132588 133731 135000 135720 137160 140400 140625 140940 141375 142875 143637 145000 145800 146250 147320 148590 150000 150800 151632 151875 152400 152685 154305 156000 156600 157950 158496 158750 162000 162500 162864 163125 164592 165100 165735 168480 168750 169128 169650 171450 174000 175500 176175 176784 178308 180000 180960 181250 182250 182880 183222 184150 185166 187500 187920 188500 189540 190500 191516 194400 195000 195750 198120 198882 202500 203125 203580 205740 206375 208800 210600 211410 217500 219375 220980 222885 225000 225504 226200 228600 234000 234900 235625 236925 237744 238125 239395 243000 243750 244296 246888 247650 250000 252720 253125 254000 254475 257175 260000 261000 263250 264160 265176 267462 270000 271440 271875 274320 274833 276225 280800 281250 281880 282750 285750 287274 290000 291600 292500 293625 294640 297180 298323 300000 301600 303264 303750 304800 305370 308610 313200 315900 317500 324000 325000 325728 326250 329184 330200 331470 337500 338256 339300 342900 348000 351000 352350 353568 356616 362500 364500 365625 366444 368300 370332 371475 375000 375840 377000 379080 381000 383032 390000 391500 394875 396240 396875 397764 401193 405000 406250 407160 411480 412750 421200 421875 422820 424125 428625 430911 435000 438750 441960 445770 450000 452400 453125 455625 457200 458055 460375 462915 468000 469800 471250 473850 475488 476250 478790 486000 487500 488592 489375 493776 495300 497205 500000 505440 506250 508000 508950 514350 522000 526500 528525 530352 534924 540000 542880 543750 548640 549666 552450 562500 563760 565500 571500 574548 580000 583200 585000 587250 589280 594360 596646 607500 609375 610740 617220 619125 626400 631800 635000 650000 652500 658125 660400 662940 668655 675000 676512 678600 685800 702000 704700 706875 713232 714375 718185 725000 729000 731250 732888 736600 740664 742950 750000 754000 758160 759375 762000 763425 766064 771525 780000 783000 789750 792480 793750 795528 802386 810000 812500 814320 815625 822960 825500 828675 842400 843750 845640 848250 857250 861822 870000 877500 880875 883920 891540 894969 900000 904800 906250 911250 914400 916110 920750 925830 939600 942500 947700 952500 957580 972000 975000 977184 978750 987552 990600 994410 1012500 1017900 1028700 1031875 1044000 1053000 1057050 1060704 1069848 1087500 1096875 1099332 1104900 1114425 1125000 1127520 1131000 1143000 1149096 1170000 1174500 1178125 1184625 1188720 1190625 1193292 1196975 1203579 1215000 1218750 1221480 1234440 1238250 1263600 1265625 1270000 1272375 1285875 1292733 1300000 1305000 1316250 1320800 1325880 1337310 1350000 1357200 1359375 1371600 1374165 1381125 1404000 1409400 1413750 1426464 1428750 1436370 1450000 1458000 1462500 1465776 1468125 1473200 1481328 1485900 1491615 1500000 1508000 1516320 1518750 1524000 1526850 1532128 1543050 1566000 1579500 1587500 1591056 1604772 1620000 1625000 1628640 1631250 1645920 1651000 1657350 1687500 1691280 1696500 1714500 1723644 1740000 1755000 1761750 1767840 1783080 1789938 1812500 1822500 1828125 1832220 1841500 1851660 1857375 1879200 1885000 1895400 1905000 1915160 1950000 1957500 1974375 1981200 1984375 1988820 2005965 2025000 2035800 2057400 2063750 2106000 2114100 2120625 2139696 2143125 2154555 2175000 2193750 2198664 2209800 2228850 2250000 2262000 2278125 2286000 2290275 2298192 2301875 2314575 2340000 2349000 2356250 2369250 2377440 2381250 2386584 2393950 2407158 2430000 2437500 2442960 2446875 2468880 2476500 2486025 2527200 2531250 2540000 2544750 2571750 2585466 2610000 2632500 2642625 2651760 2674620 2684907 2700000 2714400 2718750 2743200 2748330 2762250 2818800 2827500 2857500 2872740 2900000 2916000 2925000 2931552 2936250 2946400 2962656 2971800 2983230 3037500 3053700 3086100 3095625 3132000 3159000 3175000 3182112 3209544 3250000 3262500 3290625 3302000 3314700 3343275 3375000 3382560 3393000 3429000 3447288 3510000 3523500 3534375 3566160 3571875 3579876 3590925 3625000 3645000 3656250 3664440 3683000 3703320 3714750 3770000 3790800 3796875 3810000 3817125 3830320 3857625 3878199 3900000 3915000 3948750 3962400 3968750 3977640 4011930 4050000 4071600 4078125 4114800 4127500 4143375 4212000 4228200 4241250 4279392 4286250 4309110 4350000 4387500 4397328 4404375 4419600 4457700 4474845 4500000 4524000 4556250 4572000 4580550 4596384 4603750 4629150 4698000 4712500 4738500 4762500 4773168 4787900 4814316 4860000 4875000 4885920 4893750 4937760 4953000 4972050 5062500 5089500 5143500 5159375 5170932 5220000 5265000 5285250 5303520 5349240 5369814 5437500 5484375 5496660 5524500 5572125 5637600 5655000 5715000 5745480 5850000 5872500 5890625 5923125 5943600 5953125 5966460 5984875 6017895 6075000 6107400 6172200 6191250 6318000 6350000 6361875 6419088 6429375 6463665 6500000 6525000 6581250 6604000 6629400 6686550 6750000 6786000 6858000 6870825 6894576 6905625 7020000 7047000 7068750 7132320 7143750 7159752 7181850 7250000 7290000 7312500 7328880 7340625 7366000 7406640 7429500 7458075 7540000 7581600 7593750 7620000 7634250 7660640 7715250 7756398 7830000 7897500 7937500 7955280 8023860 8100000 8143200 8156250 8229600 8255000 8286750 8456400 8482500 8572500 8618220 8700000 8775000 8794656 8808750 8839200 8915400 8949690 9112500 9161100 9207500 9258300 9286875 9396000 9425000 9477000 9525000 9546336 9575800 9628632 9750000 9787500 9871875 9906000 9944100 10029825 10125000 10179000 10287000 10318750 10341864 10530000 10570500 10603125 10698480 10715625 10739628 10772775 10875000 10968750 10993320 11049000 11144250 11310000 11390625 11430000 11451375 11490960 11509375 11572875 11634597 11700000 11745000 11781250 11846250 11887200 11906250 11932920 11969750 12035790 12150000 12214800 12234375 12344400 12382500 12430125 12636000 12700000 12723750 12838176 12858750 12927330 13050000 13162500 13213125 13258800 13373100 13424535 13500000 13572000 13716000 13741650 13789152 13811250 14094000 14137500 14287500 14319504 14363700 14500000 14580000 14625000 14657760 14681250 14732000 14813280 14859000 14916150 15187500 15268500 15430500 15478125 15512796 15660000 15795000 15875000 15910560 16047720 16312500 16453125 16510000 16573500 16716375 16912800 16965000 17145000 17236440 17550000 17617500 17671875 17830800 17859375 17899380 17954625 18225000 18322200 18415000 18516600 18573750 18850000 18954000 19050000 19085625 19151600 19257264 19288125 19390995 19500000 19575000 19743750 19812000 19888200 20059650 20250000 20358000 20574000 20637500 20683728 20716875 21060000 21141000 21206250 21396960 21431250 21479256 21545550 21750000 21937500 21986640 22021875 22098000 22288500 22374225 22620000 22781250 22860000 22902750 22981920 23018750 23145750 23269194 23490000 23562500 23692500 23812500 23865840 23939500 24071580 24300000 24429600 24468750 24688800 24765000 24860250 25447500 25717500 25796875 25854660 26100000 26325000 26426250 26517600 26746200 26849070 27483300 27622500 27860625 28188000 28275000 28575000 28639008 28727400 29250000 29362500 29615625 29718000 29832300 29924375 30089475 30375000 30537000 30861000 30956250 31025592 31590000 31750000 31809375 32095440 32146875 32318325 32625000 32906250 33020000 33147000 33432750 33930000 34290000 34354125 34472880 34528125 34903791 35100000 35235000 35343750 35661600 35718750 35798760 35909250 36450000 36644400 36703125 36830000 37033200 37147500 37290375 37700000 37908000 38100000 38171250 38303200 38514528 38576250 38781990 39150000 39487500 39776400 40119300 40500000 40716000 41148000 41275000 41367456 41433750 42282000 42412500 42862500 42958512 43091100 43500000 43875000 43973280 44043750 44196000 44577000 44748450 45562500 45805500 46037500 46291500 46434375 46538388 46980000 47125000 47385000 47625000 47731680 47879000 48143160 48937500 49359375 49530000 49720500 50149125 50895000 51435000 51593750 51709320 52650000 52852500 53015625 53492400 53578125 53698140 53863875 54966600 55245000 55721250 56550000 57150000 57256875 57454800 57546875 57864375 58172985 58500000 58725000 59231250 59436000 59664600 59848750 60178950 60750000 61074000 61722000 61912500 62051184 62150625 63180000 63500000 63618750 64190880 64293750 64636650 65250000 65812500 66065625 66294000 66865500 67122675 67860000 68580000 68708250 68945760 69056250 69807582 70470000 70687500 71437500 71597520 71818500 72900000 73288800 73406250 73660000 74066400 74295000 74580750 76342500 77152500 77390625 77563980 78300000 78975000 79552800 80238600 82550000 82867500 83581875 84564000 84825000 85725000 85917024 86182200 87750000 88087500 89154000 89496900 89773125 91125000 91611000 92075000 92583000 92868750 93076776 94250000 94770000 95250000 95428125 95758000 96286320 96440625 96954975 97875000 98718750 99060000 99441000 100298250 101790000 102870000 103187500 103418640 103584375 105300000 105705000 106031250 106984800 107156250 107396280 107727750 109933200 110109375 110490000 111442500 111871125 113100000 114300000 114513750 114909600 115093750 115728750 116345970 117450000 118462500 119329200 119697500 120357900 121500000 122148000 123444000 123825000 124102368 124301250 127237500 128587500 129273300 130500000 131625000 132131250 132588000 133731000 134245350 137416500 138112500 139303125 139615164 140940000 141375000 142875000 143195040 143637000 146812500 148078125 148590000 149161500 149621875 150447375 152685000 154305000 154781250 155127960 157950000 159046875 160477200 160734375 161591625 165100000 165735000 167163750 169650000 171450000 171770625 172364400 172640625 174518955 175500000 176175000 178308000 178993800 179546250 182250000 183222000 184150000 185166000 185737500 186153552 186451875 188500000 189540000 190500000 190856250 191516000 192572640 192881250 193909950 195750000 197437500 198882000 200596500 203580000 205740000 206375000 206837280 207168750 211410000 212062500 214312500 214792560 215455500 219866400 220218750 220980000 222885000 223742250 229027500 230187500 231457500 232171875 232691940 234900000 236925000 238658400 239395000 240715800 247650000 248602500 250745625 254475000 257175000 258546600 263250000 264262500 267462000 268490700 269319375 274833000 276225000 278606250 279230328 282750000 285750000 286284375 287274000 289321875 290864925 293625000 296156250 297180000 298323000 299243750 300894750 305370000 308610000 309562500 310255920 310753125 315900000 318093750 320954400 321468750 323183250 330328125 331470000 334327500 335613375 339300000 342900000 343541250 344728800 345281250 349037910 352350000 357987600 359092500 364500000 366444000 368300000 370332000 371475000 372307104 372903750 381712500 385762500 387819900 391500000 394875000 397764000 401193000 412750000 414337500 417909375 422820000 424125000 428625000 429585120 430911000 440437500 445770000 447484500 448865625 458055000 460375000 462915000 464343750 465383880 473850000 477140625 478790000 481431600 482203125 484774875 495300000 497205000 501491250 508950000 514350000 517093200 517921875 526500000 528525000 534924000 536981400 538638750 549666000 552450000 557212500 558460656 559355625 565500000 571500000 572568750 574548000 578643750 581729850 587250000 592312500 596646000 598487500 601789500 610740000 617220000 619125000 620511840 621506250 636187500 642937500 646366500 660656250 662940000 668655000 671226750 687082500 690562500 696515625 698075820 704700000 715975200 718185000 742950000 745807500 748109375 752236875 763425000 771525000 775639800 789750000 802386000 807958125 825500000 828675000 835818750 848250000 857250000 858853125 861822000 872594775 880875000 891540000 894969000 897731250 916110000 920750000 925830000 928687500 930767760 932259375 947700000 954281250 957580000 962863200 964406250 969549750 994410000 1002982500 1017900000 1028700000 1034186400 1035843750 1057050000 1073962800 1077277500 1099332000 1104900000 1114425000 1116921312 1118711250 1145137500 1157287500 1163459700 1174500000 1184625000 1193292000 1196975000 1203579000 1238250000 1243012500 1253728125 1272375000 1285875000 1292733000 1321312500 1337310000 1342453500 1346596875 1374165000 1381125000 1393031250 1396151640 1431421875 1436370000 1446609375 1454324625 1485900000 1491615000 1496218750 1504473750 1526850000 1543050000 1551279600 1553765625 1579500000 1604772000 1615916250 1657350000 1671637500 1678066875 1696500000 1714500000 1717706250 1723644000 1745189550 1761750000 1789938000 1795462500 1832220000 1841500000 1851660000 1857375000 1861535520 1864518750 1908562500 1928812500 1939099500 1988820000 2005965000 2071687500 2089546875 2114100000 2147925600 2154555000 2228850000 2237422500 2244328125 2290275000 2314575000 2326919400 2369250000 2393950000 2407158000 2423874375 2476500000 2486025000 2507456250 2544750000 2571750000 2585466000 2642625000 2674620000 2684907000 2693193750 2748330000 2762250000 2786062500 2792303280 2796778125 2862843750 2872740000 2893218750 2908649250 2983230000 2992437500 3008947500 3053700000 3086100000 3102559200 3107531250 3231832500 3314700000 3343275000 3356133750 3435412500 3490379100 3523500000 3579876000 3590925000 3714750000 3729037500 3761184375 3817125000 3857625000 3878199000 4011930000 4039790625 4143375000 4179093750 4294265625 4309110000 4362973875 4457700000 4474845000 4488656250 4580550000 4629150000 4653838800 4661296875 4738500000 4787900000 4814316000 4847748750 4972050000 5014912500 5089500000 5143500000 5170932000 5285250000 5369814000 5386387500 5496660000 5524500000 5572125000 5584606560 5593556250 5725687500 5786437500 5817298500 5966460000 5984875000 6017895000 6215062500 6268640625 6463665000 6686550000 6712267500 6732984375 6870825000 6980758200 7181850000 7271623125 7429500000 7458075000 7522368750 7634250000 7715250000 7756398000 8023860000 8079581250 8286750000 8358187500 8390334375 8588531250 8618220000 8725947750 8949690000 8977312500 9161100000 9258300000 9307677600 9322593750 9695497500 9944100000 10029825000 10570500000 10739628000 10772775000 11144250000 11187112500 11451375000 11572875000 11634597000 11969750000 12035790000 12119371875 12430125000 12537281250 12927330000 13373100000 13424535000 13465968750 13741650000 13961516400 13983890625 14363700000 14543246250 14916150000 15044737500 15268500000 15430500000 15512796000 16159162500 16573500000 16716375000 16780668750 17177062500 17451895500 17899380000 17954625000 18645187500 18805921875 19390995000 20059650000 20198953125 21545550000 21814869375 22288500000 22374225000 22902750000 23145750000 23269194000 23939500000 24071580000 24238743750 24860250000 25074562500 25854660000 26849070000 26931937500 27483300000 27923032800 27967781250 29086492500 29832300000 30089475000 32318325000 33432750000 33561337500 34354125000 34903791000 35909250000 36358115625 37290375000 37611843750 38781990000 40119300000 40397906250 41951671875 43091100000 43629738750 44748450000 45805500000 46291500000 46538388000 48477487500 49720500000 50149125000 53698140000 53863875000 55935562500 58172985000 60178950000 60596859375 64636650000 66865500000 67122675000 68708250000 69807582000 71818500000 72716231250 74580750000 75223687500 77563980000 80795812500 83903343750 87259477500 89496900000 96954975000 100298250000 107727750000 109074346875 111871125000 116345970000 120357900000 121193718750 129273300000 134245350000 137416500000 139615164000 145432462500 149161500000 150447375000 161591625000 167806687500 174518955000 181790578125 193909950000 200596500000 215455500000 218148693750 223742250000 232691940000 242387437500 268490700000 290864925000 300894750000 323183250000 335613375000 349037910000 363581156250 387819900000 436297387500 447484500000 484774875000 545371734375 581729850000 601789500000 646366500000 671226750000 698075820000 727162312500 872594775000 969549750000 1090743468750 1163459700000 1342453500000 1454324625000 1745189550000 1939099500000 2181486937500 2908649250000 3490379100000 4362973875000 5817298500000 8725947750000 17451895500000
- Sum of all divisors σ(n): 72301024535040
- Sum of proper divisors (its aliquot sum) s(n): 54849129035040
- 17451895500000 is an abundant number, because the sum of its proper divisors (54849129035040) is greater than itself. Its abundance is 37397233535040
Bases of 17451895500000
- Binary: 111111011111010101100000100000101100111000002
- Hexadecimal: 0xFDF56082CE0
- Base-36: 66PAFZI00
Squares and roots of 17451895500000
- 17451895500000 squared (174518955000002) is 304568656542920250000000000
- 17451895500000 cubed (174518955000003) is 5315300366562435467833875000000000000000
-
The
square root of 17451895500000 is 4177546.5886091563 -
The
cube root of 17451895500000 is 25938.6598852287
Scales and comparisons
How big is 17451895500000?- 17,451,895,500,000 seconds is equal to 554,916 years, 15 weeks, 2 days, 6 hours.
-
To count from 1 to 17,451,895,500,000 would take you about one million, three hundred eighty-seven thousand, two hundred ninety 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 17451895500000 cubic inches would be around 2161.6 feet tall.
Recreational maths with 17451895500000
- 17451895500000 backwards is 00000559815471
- 17451895500000 is a
Harshad number . - The number of decimal digits it has is: 14
- The sum of 17451895500000'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 17451895500000 - Facts about the integer". Numbermatics.com. 2024. Web. 20 June 2024.
APA style:
Numbermatics. (2024). Number 17451895500000 - Facts about the integer. Retrieved 20 June 2024, from https://numbermatics.com/n/17451895500000/
Chicago style:
Numbermatics. 2024. "Number 17451895500000 - Facts about the integer". https://numbermatics.com/n/17451895500000/
The information we have on file for 17451895500000 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 17451895500000, math, Factors of 17451895500000, curriculum, school, college, exams, university, Prime factorization of 17451895500000, STEM, science, technology, engineering, physics, economics, calculator, seventeen trillion, four hundred fifty-one billion, eight hundred ninety-five million, five hundred thousand.