74598446534976
74,598,446,534,976 is an even composite number composed of seven prime numbers multiplied together.
What does the number 74598446534976 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 2268 divisors.
74598446534976 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two thousand, two hundred sixty-eight divisors.
Prime factorization of 74598446534976:
26 × 32 × 72 × 13 × 232 × 292 × 457
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7 × 7 × 13 × 23 × 23 × 29 × 29 × 457)See below for interesting mathematical facts about the number 74598446534976 from the Numbermatics database.
Names of 74598446534976
- Cardinal: 74598446534976 can be written as Seventy-four trillion, five hundred ninety-eight billion, four hundred forty-six million, five hundred thirty-four thousand, nine hundred seventy-six.
Scientific notation
- Scientific notation: 7.4598446534976 × 1013
Factors of 74598446534976
Divisors of 74598446534976
- Number of divisors d(n): 2268
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 13 14 16 18 21 23 24 26 28 29 32 36 39 42 46 48 49 52 56 58 63 64 69 72 78 84 87 91 92 96 98 104 112 116 117 126 138 144 147 156 161 168 174 182 184 192 196 203 207 208 224 232 234 252 261 273 276 288 294 299 312 322 336 348 364 368 377 392 406 414 416 441 448 457 464 468 483 504 522 529 546 552 576 588 598 609 624 637 644 667 672 696 728 736 754 784 812 819 828 832 841 882 897 914 928 936 966 1008 1044 1058 1092 1104 1127 1131 1176 1196 1218 1248 1274 1288 1334 1344 1371 1392 1421 1449 1456 1472 1508 1568 1587 1624 1638 1656 1682 1764 1794 1827 1828 1856 1872 1911 1932 2001 2016 2088 2093 2116 2184 2208 2254 2262 2352 2392 2436 2496 2523 2548 2576 2639 2668 2691 2742 2784 2842 2898 2912 3016 3136 3174 3199 3248 3276 3312 3364 3381 3393 3528 3588 3654 3656 3703 3744 3822 3864 4002 4032 4113 4176 4186 4232 4263 4368 4416 4508 4524 4669 4704 4761 4784 4872 5046 5096 5152 5278 5336 5382 5484 5568 5684 5733 5796 5824 5887 5941 6003 6032 6279 6348 6398 6496 6552 6624 6728 6762 6786 6877 7056 7176 7308 7312 7406 7488 7569 7644 7728 7917 8004 8226 8352 8372 8464 8526 8671 8736 9016 9048 9338 9408 9522 9568 9597 9744 10092 10143 10192 10304 10511 10556 10672 10764 10933 10968 11109 11368 11466 11592 11774 11882 12006 12064 12558 12696 12789 12796 12992 13104 13248 13253 13456 13524 13572 13754 14007 14112 14352 14616 14624 14651 14812 15138 15288 15341 15456 15834 16008 16452 16704 16744 16928 17052 17342 17472 17661 17823 18032 18096 18473 18676 18837 19044 19136 19194 19343 19488 20184 20286 20384 20631 21022 21112 21344 21528 21866 21936 22218 22393 22736 22932 23184 23548 23751 23764 24012 24128 25116 25392 25578 25592 25921 26013 26208 26506 26912 27048 27144 27508 28014 28224 28704 28791 29232 29248 29302 29624 30276 30576 30682 30912 31533 31668 32016 32683 32799 32904 33327 33488 33856 34104 34684 35322 35646 36064 36192 36946 37352 37674 38088 38388 38686 38976 39759 40368 40572 40768 41209 41262 41587 42021 42044 42224 42688 43056 43732 43872 43953 44436 44786 45472 45864 46023 46368 47096 47502 47528 48024 48139 50232 50784 51156 51184 51842 52026 52416 52983 53012 53469 53824 54096 54288 55016 55419 56028 57408 57582 58029 58464 58604 59248 60552 60697 61152 61364 61893 63066 63336 64032 65366 65598 65808 66654 66976 67179 68208 69368 70644 71292 72128 72384 73577 73892 74704 75348 76176 76531 76776 77372 77763 78039 79518 80736 81144 82418 82524 83174 84042 84088 84448 86112 87464 87744 87906 88872 89572 90944 91728 92046 92736 92771 94192 94599 95004 95056 96048 96278 98049 98397 100464 101568 102312 102368 103684 104052 105966 106024 106938 107387 108192 108576 110032 110838 112056 115164 116058 116928 117208 118496 119277 121104 121394 122304 122728 123627 123786 124761 126132 126672 128064 130732 131196 131616 131859 133308 133952 134358 135401 136416 136643 138069 138736 141288 142584 144417 147154 147784 149408 150696 152352 153062 153552 154744 155526 156078 159036 161472 162288 164836 165048 166257 166348 168084 168176 168896 172224 172289 174087 174928 175812 177744 179144 182091 183456 184092 185542 188384 189198 190008 190112 192096 192556 196098 196794 199433 200928 201537 204624 204736 207368 208104 211932 212048 213876 214774 216384 217152 220064 220731 221676 224112 229593 230328 232116 233289 234416 236992 238554 241753 242208 242788 245456 247254 247572 249522 251459 252264 253344 261464 262392 263232 263718 266616 268716 270802 272832 273286 276138 277472 278313 282576 285168 288834 291109 294147 294308 295568 298816 301392 304704 304819 306124 307104 309488 311052 312156 318072 322161 324576 329672 330096 332514 332696 336168 336352 336973 344578 348174 349856 351624 355488 358288 364182 366912 368184 370881 371084 374283 376768 378396 380016 380224 384192 384337 385112 392196 393588 398866 401856 403074 406203 409248 409929 414736 416208 423864 424096 424879 427752 429548 433251 440128 441462 443352 444889 448224 459186 460656 464232 466578 468832 477108 483506 484416 485576 490912 494508 495144 499044 502918 504528 506688 515039 516867 522928 524784 527436 533232 535717 537432 541604 546273 546572 552276 554944 556626 565152 570336 577668 582218 588294 588616 591136 598299 602784 609638 612248 614208 618976 622104 624312 636144 644322 649152 649397 659344 660192 662193 665028 665392 672336 672704 673946 688779 689156 696348 699712 703248 710976 716576 725259 728364 736368 741762 742168 748566 751709 754377 756792 760032 768674 770224 784392 787176 797732 806148 812406 818496 819858 829472 832416 834939 847728 848192 849758 855504 859096 866502 873327 882924 886704 889778 896448 914457 918372 921312 928464 933156 937664 947807 954216 956501 966483 967012 971152 981824 989016 990288 998088 1005836 1009056 1010919 1030078 1033734 1045856 1049568 1054872 1066464 1071434 1074864 1083208 1092546 1093144 1104552 1113252 1130304 1140672 1153011 1155336 1164436 1176588 1177232 1182272 1196598 1205568 1206023 1218609 1219276 1224496 1229787 1237952 1244208 1248624 1272288 1274637 1288644 1298794 1318688 1320384 1324386 1330056 1330784 1334667 1344672 1347892 1377558 1378312 1392696 1396031 1406496 1433152 1450518 1456728 1472736 1483524 1484336 1497132 1503418 1508754 1513584 1520064 1537348 1540448 1545117 1550601 1568784 1574352 1595464 1607151 1612296 1624812 1639716 1658944 1664832 1669878 1692271 1695456 1699516 1711008 1718192 1733004 1746654 1760213 1765848 1773408 1779556 1794897 1828914 1836744 1842624 1856928 1866312 1895614 1908432 1913002 1932966 1934024 1942304 1948191 1978032 1980576 1996176 2011672 2018112 2021838 2060156 2067468 2091712 2099136 2109744 2132928 2133733 2142868 2149728 2166416 2175777 2185092 2186288 2209104 2226504 2255127 2263131 2306022 2310672 2328872 2353176 2354464 2393196 2412046 2437218 2438552 2448992 2459574 2488416 2497248 2544576 2549274 2577288 2597588 2619981 2637376 2648772 2660112 2661568 2669334 2689344 2690359 2695784 2743371 2755116 2756624 2785392 2792062 2812992 2843421 2869503 2901036 2913456 2945472 2967048 2968672 2994264 3006836 3017508 3027168 3032757 3074696 3080896 3090234 3101202 3114223 3137568 3142789 3148704 3190928 3214302 3224592 3249624 3279432 3339756 3384542 3390912 3399032 3422016 3436384 3459033 3466008 3493308 3520426 3531696 3546816 3559112 3589794 3618069 3657828 3673488 3713856 3732624 3791228 3816864 3823911 3826004 3865932 3868048 3884608 3896382 3956064 3961152 3962647 3992352 4004001 4023344 4043676 4120312 4134936 4188093 4219488 4267466 4285736 4299456 4332832 4351554 4370184 4372576 4418208 4453008 4510254 4526262 4612044 4621344 4635351 4657744 4706352 4708928 4786392 4821453 4824092 4874436 4877104 4897984 4919148 4976832 4994496 4996381 5076813 5098548 5154576 5195176 5239962 5280639 5297544 5320224 5338668 5380718 5391568 5486742 5510232 5513248 5570784 5584124 5686842 5739006 5783557 5802072 5826912 5844573 5934096 5937344 5988528 6013672 6035016 6054336 6065514 6149392 6180468 6202404 6228446 6275136 6285578 6297408 6381856 6401199 6428604 6449184 6499248 6558864 6679512 6695507 6765381 6769084 6798064 6872768 6918066 6932016 6986616 7010837 7040852 7063392 7118224 7179588 7236138 7315656 7346976 7465248 7582456 7633728 7647822 7652008 7731864 7736096 7792764 7912128 7925294 7984704 8008002 8046688 8071077 8087352 8240624 8269872 8376186 8438976 8442161 8530263 8534932 8571472 8608509 8665664 8703108 8740368 8745152 8836416 8839751 8906016 9020508 9052524 9224088 9242688 9270702 9315488 9342669 9412704 9428367 9572784 9642906 9648184 9748872 9754208 9772217 9838296 9992762 10153626 10197096 10309152 10390352 10479924 10561278 10595088 10640448 10677336 10761436 10783136 10854207 10973484 11020464 11026496 11141568 11168248 11373684 11478012 11567114 11604144 11653824 11689146 11845897 11868192 11887941 11977056 12027344 12070032 12131028 12298784 12321491 12360936 12404808 12456892 12564279 12571156 12763712 12802398 12857208 12898368 12998496 13117728 13359024 13391014 13530762 13538168 13596128 13836132 13864032 13973232 14021674 14081704 14126784 14236448 14359176 14472276 14631312 14693952 14930496 14936131 14989143 15164912 15230439 15295644 15304016 15463728 15472192 15585528 15841917 15850588 16016004 16093376 16142154 16174704 16481248 16539744 16752372 16884322 17060526 17069864 17142944 17217018 17350671 17406216 17480736 17679502 17812032 18041016 18105048 18448176 18541404 18630976 18685338 18825408 18832513 18856734 19145568 19203597 19285812 19296368 19497744 19508416 19544434 19676592 19985524 20086521 20307252 20394192 20618304 20780704 20959848 21032511 21122556 21190176 21354672 21522872 21566272 21708414 21799561 21946968 21999523 22040928 22336496 22747368 22956024 23134228 23208288 23378292 23691794 23736384 23775882 23954112 24054688 24140064 24213231 24262056 24597568 24642982 24721872 24809616 24913784 25128558 25142312 25326483 25604796 25714416 25996992 26235456 26519253 26718048 26782028 27061524 27076336 27192256 27672264 27728064 27738529 27946464 28028007 28043348 28163408 28285101 28472896 28718352 28944552 29262624 29316651 29872262 29978286 30329824 30460878 30591288 30608032 30927456 31171056 31683834 31701176 32032008 32284308 32349408 32962496 33079488 33504744 33768644 34121052 34139728 34285888 34434036 34701342 34812432 34961472 34974667 35359004 35537691 35663823 36082032 36210096 36896352 36964473 37082808 37370676 37665026 37713468 38291136 38407194 38571624 38592736 38995488 39088868 39353184 39971048 40173042 40484899 40614504 40788384 41561408 41919696 42065022 42245112 42380352 42709344 43045744 43416828 43599122 43893936 43999046 44081856 44672992 44808393 44967429 45494736 45912048 46268456 46416576 46756584 47383588 47551764 48109376 48280128 48426462 48524112 49075859 49285964 49443744 49619232 49827568 50257116 50284624 50652966 51209592 51428832 52052013 53038506 53436096 53564056 54123048 54152672 55344528 55477058 55892928 56056014 56086696 56326816 56497539 56570202 57436704 57889104 58525248 58633302 59744524 59956572 60259563 60659648 60921756 61182576 61216064 61854912 61878257 62342112 63097533 63367668 63402352 64064016 64568616 64698816 65398683 65998569 67009488 67537288 68242104 68279456 68868072 69402684 69624864 69949334 70718008 71075382 71327646 72164064 72420192 73792704 73928946 74165616 74741352 75330052 75426936 75979449 76814388 77143248 77185472 77990976 78177736 78706368 79557759 79942096 80346084 80969798 81229008 81576768 83215587 83839392 84130044 84490224 85418688 86091488 86833656 87198244 87787872 87949953 87998092 89345984 89616786 89934858 90989472 91140881 91824096 92536912 93513168 94767176 95103528 96852924 97048224 98151718 98571928 98887488 99238464 99655136 100514232 100569248 101305932 102419184 102857664 104104026 104924001 106077012 106613073 107128112 108246096 108305344 110689056 110893419 110954116 112112028 112173392 112653632 112995078 113140404 114873408 114916763 115778208 117266604 119489048 119913144 120519126 121454697 121843512 122365152 123756514 124684224 126195066 126735336 126804704 128128032 129137232 130797366 131997138 134018976 134425179 135074576 136484208 136558912 137736144 138805368 139249728 139898668 141436016 142150764 142655292 144328128 144840384 147227577 147857892 148331232 149482704 150660104 150853872 151958898 153628776 153996661 154286496 156355472 159115518 159884192 160692168 161939596 162458016 166431174 167678784 168260088 168980448 169492617 172182976 173667312 174396488 175575744 175899906 175996184 179233572 179869716 181978944 182281762 183648192 185073824 185634771 187026336 189534352 190207056 193705848 194096448 194169703 196196049 196303436 197143856 197995707 199310272 201028464 201138496 202611864 203314273 204838368 208208052 209848002 212154024 213226146 214256224 216492192 221378112 221786838 221908232 224224056 224346784 225990156 226280808 229833526 231556416 234533208 238978096 239826288 241038252 242909394 243687024 244730304 244822669 247513028 249646761 252390132 253470672 253609408 256256064 258274464 261594732 263994276 268037952 268850358 270149152 272968416 273422643 275472288 277610736 279797336 282872032 283394293 284301528 285310584 294455154 295715784 296662464 298965408 301320208 301707744 303917796 307257552 307993322 308572992 312710944 314772003 318231036 319768384 321384336 323879192 324916032 332862348 336520176 337960896 338985234 343531013 344750289 347334624 348792976 351799812 351992368 358467144 359739432 364364091 364563524 370147648 371269542 374052672 379068704 380414112 387411696 388339406 392392098 392606872 394287712 395991414 402056928 405223728 406628546 409676736 416416104 419696004 424308048 426452292 428512448 432984384 433147799 441682731 443573676 443816464 448448112 448693568 451980312 452561616 459667052 461989983 469066416 477956192 479652576 482076504 485818788 487374048 489645338 495026056 499293522 504780264 506941344 516548928 523189464 527988552 537700716 540298304 545936832 546845286 550944576 555221472 556904313 559594672 565744064 566788586 568603056 570621168 582509109 588910308 591431568 597930816 602640416 603415488 607835592 609942819 614515104 615986644 625421888 629544006 636462072 637986167 642768672 647758384 665724696 673040352 677970468 687062026 689500578 694669248 697585952 703599624 703984736 716934288 719478864 728728182 729127048 734468007 742539084 758137408 760828224 774823392 776678812 784784196 785213744 788575424 791982828 804113856 804417341 810447456 813257092 820267929 832832208 839392008 848616096 850182879 852904584 866295598 883365462 887147352 887632928 896896224 903960624 905123232 919334104 923979966 938132832 955912384 959305152 964153008 971637576 974748096 979290676 990052112 998587044 1009560528 1013882688 1030593039 1034250867 1046378928 1055977104 1075401432 1093690572 1110442944 1113808626 1119189344 1133577172 1137206112 1141242336 1165018218 1177820616 1182863136 1205280832 1215671184 1219885638 1229030208 1231973288 1259088012 1272924144 1275972334 1285537344 1295516768 1299443397 1331449392 1346080704 1355940936 1374124052 1379001156 1385969949 1395171904 1407199248 1407969472 1423199911 1433868576 1438957728 1457456364 1458254096 1468936014 1485078168 1549646784 1553357624 1569568392 1570427488 1583965656 1608834682 1620894912 1626514184 1640535858 1665664416 1678784016 1697232192 1700365758 1705809168 1732591196 1747527327 1766730924 1774294704 1775265856 1793792448 1807921248 1810246464 1829828457 1838668208 1847959932 1876265664 1913958501 1928306016 1943275152 1958581352 1980104224 1997174088 2019121056 2061186078 2068501734 2092757856 2111954208 2150802864 2187381144 2203404021 2227617252 2238378688 2267154344 2274412224 2282484672 2330036436 2355641232 2365726272 2413252023 2431342368 2439771276 2463946576 2518176024 2545848288 2550548637 2551944668 2591033536 2598886794 2643085549 2662898784 2711881872 2748248104 2758002312 2771939898 2814398496 2846399822 2867737152 2877915456 2914912728 2916508192 2937872028 2970156336 3091779117 3106715248 3139136784 3140854976 3167931312 3217669364 3253028368 3281071716 3331328832 3357568032 3400731516 3411618336 3465182392 3495054654 3533461848 3548589408 3615842496 3659656914 3677336416 3695919864 3827917002 3856612032 3886550304 3898330191 3917162704 3960208448 3994348176 4038242112 4122372156 4137003468 4185515712 4223908416 4269599733 4301605728 4374762288 4406808042 4455234504 4465903169 4534308688 4660072872 4711282464 4826504046 4862684736 4879542552 4927893152 5036352048 5091696576 5101097274 5103889336 5197773588 5286171098 5325797568 5423763744 5496496208 5516004624 5543879796 5628796992 5630921387 5692799644 5741875503 5829825456 5833016384 5875744056 5940312672 6183558234 6213430496 6278273568 6335862624 6435338728 6506056736 6562143432 6715136064 6801463032 6823236672 6930364784 6990109308 7066923696 7097178816 7239756069 7319313828 7354672832 7391839728 7655834004 7773100608 7796660382 7834325408 7929256647 7988696352 8244744312 8274006936 8539199466 8603211456 8749524576 8813616084 8910469008 8931806338 9068617376 9320145744 9422564928 9653008092 9759085104 9855786304 9962399377 10072704096 10202194548 10207778672 10395547176 10572342196 10847527488 10992992416 11032009248 11087759592 11261842774 11385599288 11483751006 11659650912 11751488112 11880625344 12367116468 12426860992 12556547136 12671725248 12808799199 12870677456 13012113472 13124286864 13397709507 13602926064 13860729568 13980218616 14133847392 14479512138 14638627656 14783679456 15311668008 15593320764 15668650816 15858513294 15977392704 16489488624 16548013872 16892764161 17078398932 17499049152 17627232168 17820938016 17863612676 18137234752 18501598843 18640291488 19306016184 19518170208 19924798754 20145408192 20404389096 20415557344 20791094352 21144684392 21985984832 22064018496 22175519184 22523685548 22771198576 22967502012 23319301824 23502976224 23787769941 24734232936 25617598398 25741354912 26248573728 26795419014 27205852128 27721459136 27960437232 28267694784 28959024276 29277255312 29567358912 29887198131 30623336016 31186641528 31717026588 32978977248 33096027744 33785528322 34156797864 35254464336 35641876032 35727225352 37003197686 37280582976 38612032368 39036340416 39849597508 40193128521 40808778192 40831114688 41582188704 42289368784 44351038368 45047371096 45542397152 45935004024 47005952448 47575539882 49468465872 50678292483 51235196796 51482709824 52497147456 53590838028 54411704256 55504796529 55920874464 57918048552 58554510624 59774396262 61246672032 62373283056 63434053176 65957954496 66192055488 67571056644 68313595728 70508928672 71454450704 74006395372 77224064736 79699195016 80386257042 81617556384 83164377408 84578737568 88702076736 89661594393 90094742192 91084794304 91870008048 95151079764 98936931744 101356584966 102470393592 107181676056 111009593058 111841748928 115836097104 117109021248 119548792524 122493344064 124746566112 126868106352 129511191901 135142113288 136627191456 141017857344 142908901408 148012790744 154448129472 159398390032 160772514084 163235112768 166514389587 169157475136 179323188786 180189484384 183740016096 190302159528 197873863488 202713169932 204940787184 214363352112 222019186116 231672194208 239097585048 249493132224 253736212704 259022383802 270284226576 273254382912 285817802816 296025581488 318796780064 321545028168 333028779174 358646377572 360378968768 367480032192 380604319056 388533575703 405426339864 409881574368 428726704224 444038372232 463344388416 478195170096 507472425408 518044767604 540568453152 592051162976 637593560128 643090056336 666057558348 717292755144 761208638112 777067151406 810852679728 819763148736 857453408448 888076744464 956390340192 1036089535208 1081136906304 1165600727109 1184102325952 1286180112672 1332115116696 1434585510288 1522417276224 1554134302812 1621705359456 1776153488928 1912780680384 2072179070416 2331201454218 2572360225344 2664230233392 2869171020576 3108268605624 3243410718912 3552306977856 4144358140832 4662402908436 5328460466784 5738342041152 6216537211248 8288716281664 9324805816872 10656920933568 12433074422496 18649611633744 24866148844992 37299223267488 74598446534976
- Sum of all divisors σ(n): 290642237941692
- Sum of proper divisors (its aliquot sum) s(n): 216043791406716
- 74598446534976 is an abundant number, because the sum of its proper divisors (216043791406716) is greater than itself. Its abundance is 141445344871740
Bases of 74598446534976
- Binary: 100001111011000110011011110100000010001010000002
- Hexadecimal: 0x43D8CDE81140
- Base-36: QFY1WZPS0
Squares and roots of 74598446534976
- 74598446534976 squared (745984465349762) is 5564928225431672780791320576
- 74598446534976 cubed (745984465349763) is 415135000695843510956065742834042412466176
-
The
square root of 74598446534976 is 8637039.2227299743 -
The
cube root of 74598446534976 is 42096.2355860583
Scales and comparisons
How big is 74598446534976?- 74,598,446,534,976 seconds is equal to 2,371,999 years, 44 weeks, 2 days, 9 minutes, 36 seconds.
-
To count from 1 to 74,598,446,534,976 would take you about five million, nine hundred twenty-nine thousand, nine hundred ninety-nine 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 74598446534976 cubic inches would be around 3508 feet tall.
Recreational maths with 74598446534976
- 74598446534976 backwards is 67943564489547
- The number of decimal digits it has is: 14
- The sum of 74598446534976's digits is 81
- 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 74598446534976 - Facts about the integer". Numbermatics.com. 2024. Web. 4 June 2024.
APA style:
Numbermatics. (2024). Number 74598446534976 - Facts about the integer. Retrieved 4 June 2024, from https://numbermatics.com/n/74598446534976/
Chicago style:
Numbermatics. 2024. "Number 74598446534976 - Facts about the integer". https://numbermatics.com/n/74598446534976/
The information we have on file for 74598446534976 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 74598446534976, math, Factors of 74598446534976, curriculum, school, college, exams, university, Prime factorization of 74598446534976, STEM, science, technology, engineering, physics, economics, calculator, seventy-four trillion, five hundred ninety-eight billion, four hundred forty-six million, five hundred thirty-four thousand, nine hundred seventy-six.