1484310998016
1,484,310,998,016 is an even composite number composed of six prime numbers multiplied together.
1484310998016 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two thousand, four hundred sixty-four divisors.
Prime factorization of 1484310998016:
210 × 36 × 73 × 11 × 17 × 31
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 7 × 7 × 7 × 11 × 17 × 31)See below for interesting mathematical facts about the number 1484310998016 from the Numbermatics database.
Names of 1484310998016
- Cardinal: 1484310998016 can be written as One trillion, four hundred eighty-four billion, three hundred ten million, nine hundred ninety-eight thousand and sixteen.
Scientific notation
- Scientific notation: 1.484310998016 × 1012
Factors of 1484310998016
Divisors of 1484310998016
- Number of divisors d(n): 2464
-
Complete list of divisors:
1 2 3 4 6 7 8 9 11 12 14 16 17 18 21 22 24 27 28 31 32 33 34 36 42 44 48 49 51 54 56 62 63 64 66 68 72 77 81 84 88 93 96 98 99 102 108 112 119 124 126 128 132 136 144 147 153 154 162 168 176 186 187 189 192 196 198 204 216 217 224 231 238 243 248 252 256 264 272 279 288 294 297 306 308 324 336 341 343 352 357 372 374 378 384 392 396 408 432 434 441 448 459 462 476 486 496 504 512 527 528 539 544 558 561 567 576 588 594 612 616 648 651 672 682 686 693 704 714 729 744 748 756 768 784 792 816 833 837 864 868 882 891 896 918 924 952 972 992 1008 1023 1024 1029 1054 1056 1071 1078 1088 1116 1122 1134 1152 1176 1188 1224 1232 1296 1302 1309 1323 1344 1364 1372 1377 1386 1408 1428 1458 1488 1496 1512 1519 1536 1568 1581 1584 1617 1632 1666 1674 1683 1701 1728 1736 1764 1782 1792 1836 1848 1904 1944 1953 1984 2016 2046 2058 2079 2108 2112 2142 2156 2176 2232 2244 2268 2304 2352 2376 2387 2448 2464 2499 2511 2592 2604 2618 2646 2673 2688 2728 2744 2754 2772 2816 2856 2916 2976 2992 3024 3038 3069 3072 3087 3136 3162 3168 3213 3234 3264 3332 3348 3366 3402 3456 3472 3528 3564 3584 3672 3689 3696 3773 3808 3888 3906 3927 3968 3969 4032 4092 4116 4131 4158 4216 4224 4284 4312 4352 4464 4488 4536 4557 4608 4704 4743 4752 4774 4851 4896 4928 4998 5022 5049 5103 5184 5208 5236 5292 5346 5376 5456 5488 5508 5544 5632 5712 5797 5831 5832 5859 5952 5984 6048 6076 6138 6174 6237 6272 6324 6336 6426 6468 6528 6664 6696 6732 6804 6912 6944 7056 7128 7161 7168 7344 7378 7392 7497 7533 7546 7616 7776 7812 7854 7936 7938 8019 8064 8184 8232 8262 8316 8432 8448 8568 8624 8704 8928 8976 9072 9114 9163 9207 9216 9261 9408 9486 9504 9548 9639 9702 9792 9856 9996 10044 10098 10206 10368 10416 10472 10584 10633 10692 10752 10912 10976 11016 11067 11088 11264 11319 11424 11594 11662 11664 11718 11781 11904 11907 11968 12096 12152 12276 12348 12393 12474 12544 12648 12672 12852 12936 13056 13328 13392 13464 13608 13671 13824 13888 14112 14229 14256 14322 14553 14688 14756 14784 14994 15066 15092 15147 15232 15552 15624 15708 15872 15876 16038 16128 16368 16464 16524 16632 16709 16864 16896 17136 17248 17391 17408 17493 17577 17856 17952 18144 18228 18326 18414 18522 18711 18816 18972 19008 19096 19278 19404 19584 19712 19992 20088 20196 20412 20736 20832 20944 21168 21266 21384 21483 21504 21824 21952 22032 22134 22176 22491 22599 22638 22848 23188 23324 23328 23436 23562 23808 23814 23936 24192 24304 24552 24696 24786 24948 25088 25296 25344 25704 25823 25872 26112 26656 26784 26928 27216 27342 27489 27621 27648 27776 27783 28224 28458 28512 28644 28917 29106 29376 29512 29568 29988 30132 30184 30294 30464 31104 31248 31416 31744 31752 31899 32076 32256 32736 32928 33048 33201 33264 33418 33728 33792 33957 34272 34496 34782 34986 35154 35343 35712 35721 35904 36288 36456 36652 36828 37044 37422 37632 37944 38016 38192 38556 38808 39168 39424 39984 40176 40392 40579 40824 41013 41472 41664 41888 42336 42532 42687 42768 42966 43648 43659 43904 44064 44268 44352 44982 45198 45276 45441 45696 46376 46648 46656 46872 47124 47616 47628 47872 48384 48608 49104 49392 49572 49896 50127 50176 50592 50688 51408 51646 51744 52173 52224 52479 52731 53312 53568 53856 54432 54684 54978 55242 55552 55566 56133 56448 56916 57024 57288 57834 58212 58752 59024 59136 59976 60264 60368 60588 60928 62208 62496 62832 63504 63798 64141 64152 64449 64512 65472 65856 66096 66402 66528 66836 67456 67473 67914 68544 68992 69564 69972 70308 70686 71424 71442 71808 72576 72912 73304 73656 74088 74844 75264 75888 76032 76384 77112 77469 77616 78336 78848 79968 80352 80784 81158 81648 82026 82467 82863 82944 83328 83349 83776 84672 85064 85374 85536 85932 86751 87296 87318 87808 88128 88536 88704 89964 90396 90552 90882 91392 92752 93296 93312 93744 94248 95232 95256 95697 95744 96768 97216 98208 98784 99144 99603 99792 100254 101184 101376 101871 102816 103292 103488 104346 104958 105462 106029 106624 107136 107712 108864 109368 109956 110484 111104 111132 112266 112896 113832 114048 114576 115668 116424 116963 117504 118048 118272 119952 120528 120736 121176 121737 121856 123039 124416 124992 125664 127008 127596 128061 128282 128304 128898 130944 130977 131712 132192 132804 133056 133672 134912 134946 135828 136323 137088 137984 139128 139944 140616 141372 142848 142884 143616 145152 145824 146608 147312 148176 149688 150381 150528 151776 152064 152768 154224 154938 155232 156519 156672 157437 158193 159936 160704 161568 162316 163296 164052 164934 165726 166656 166698 167552 169344 170128 170748 171072 171864 173502 174592 174636 175616 176256 177072 177408 179928 180761 180792 181104 181764 182784 185504 186592 186624 187488 188496 190512 191394 191488 192423 193347 193536 194432 196416 197568 198288 199206 199584 200508 202368 202419 203742 205632 206584 206976 208692 209916 210924 212058 213248 214272 215424 217728 218736 219912 220968 222208 222264 224532 225792 227664 228096 229152 231336 232407 232848 233926 235008 236096 236544 239904 241056 241472 242352 243474 246078 247401 248589 248832 249984 250047 251328 254016 255192 256122 256564 256608 257796 261888 261954 263424 264384 265608 266112 267344 269824 269892 271656 272646 274176 275968 278256 279888 281232 282744 284053 285696 285768 287091 287232 290304 291648 293216 294624 296352 298809 299376 300762 303552 304128 305536 305613 308448 309876 310464 313038 314874 316386 318087 319872 321408 323136 324632 326592 328104 329868 331452 333312 333396 335104 338688 340256 341496 342144 343728 347004 349184 349272 350889 351232 352512 354144 354816 359856 361522 361584 362208 363528 365211 365568 369117 371008 373184 373248 374976 376992 381024 382788 384183 384846 386694 388864 392832 392931 395136 396576 398412 399168 401016 404736 404838 407484 411264 413168 413952 417384 419832 421848 424116 426496 428544 430848 435456 437472 439824 441936 444528 449064 451143 451584 455328 456192 458304 462672 464814 465696 467852 469557 470016 472192 472311 479808 482112 482944 484704 486948 492156 494802 497178 499968 500094 502656 508032 510384 512244 513128 513216 515592 523776 523908 526848 528768 531216 532224 534688 539648 539784 542283 543312 545292 548352 551936 556512 559776 562464 565488 568106 571536 574182 574464 577269 580041 580608 583296 586432 589248 592704 597618 598752 601524 607104 607257 611072 611226 616896 619752 620928 626076 629748 632772 636174 639744 642816 646272 649264 653184 656208 659736 662904 666624 666792 670208 677376 680512 682992 684288 687456 694008 697221 698544 701778 705024 708288 709632 719712 723044 723168 724416 727056 730422 738234 742016 742203 746368 746496 749952 753984 762048 765576 768366 769692 773388 777728 785664 785862 790272 793152 796824 798336 802032 809472 809676 814968 822528 826336 827904 834768 839664 843696 848232 852159 852992 857088 861273 861696 870912 874944 879648 883872 889056 896427 898128 902286 910656 912384 916608 916839 925344 929628 931392 935704 939114 944384 944622 954261 959616 964224 965888 969408 973896 984312 989604 994356 999936 1000188 1005312 1016064 1020768 1024488 1026256 1026432 1031184 1047552 1047816 1052667 1053696 1057536 1062432 1064448 1069376 1079568 1084566 1086624 1090584 1095633 1096704 1107351 1113024 1119552 1124928 1130976 1136212 1143072 1148364 1154538 1160082 1166592 1172864 1178496 1185408 1195236 1197504 1203048 1214208 1214514 1222144 1222452 1233792 1239504 1241856 1252152 1259496 1265544 1272348 1279488 1285632 1292544 1298528 1306368 1312416 1319472 1325808 1333584 1340416 1353429 1354752 1361024 1365984 1368576 1374912 1388016 1394442 1397088 1403556 1408671 1410048 1416576 1416933 1439424 1446088 1446336 1448832 1454112 1460844 1476468 1484032 1484406 1492736 1499904 1507968 1524096 1531152 1536732 1539384 1546776 1555456 1571328 1571724 1580544 1586304 1593648 1596672 1604064 1618944 1619352 1626849 1629936 1645056 1652672 1655808 1669536 1679328 1687392 1696464 1704318 1722546 1723392 1731807 1740123 1741824 1749888 1759296 1767744 1778112 1792854 1796256 1804572 1821312 1833216 1833678 1850688 1859256 1862784 1871408 1878228 1888768 1889244 1908522 1919232 1928448 1931776 1938816 1947792 1968624 1979208 1988371 1988712 1999872 2000376 2010624 2032128 2041536 2048976 2052512 2052864 2062368 2091663 2095632 2105334 2115072 2124864 2128896 2138752 2159136 2169132 2173248 2181168 2191266 2214702 2226048 2226609 2239104 2249856 2261952 2272424 2286144 2296728 2309076 2320164 2333184 2345728 2356992 2370816 2390472 2395008 2406096 2428416 2429028 2444288 2444904 2467584 2479008 2483712 2504304 2518992 2531088 2544696 2556477 2558976 2571264 2583819 2585088 2597056 2612736 2624832 2638944 2651616 2667168 2689281 2706858 2722048 2731968 2737152 2749824 2750517 2776032 2788884 2794176 2807112 2817342 2833152 2833866 2878848 2892176 2892672 2897664 2908224 2921688 2952936 2968064 2968812 2985472 2999808 3015936 3048192 3062304 3073464 3078768 3093552 3142656 3143448 3158001 3161088 3172608 3187296 3193344 3208128 3238704 3253698 3259872 3286899 3290112 3305344 3339072 3358656 3374784 3392928 3408636 3445092 3463614 3480246 3499776 3518592 3535488 3556224 3585708 3592512 3609144 3642624 3666432 3667356 3701376 3718512 3725568 3742816 3756456 3777536 3778488 3817044 3838464 3856896 3863552 3877632 3895584 3937248 3958416 3976742 3977424 4000752 4021248 4060287 4064256 4083072 4097952 4105024 4105728 4124736 4183326 4191264 4210668 4226013 4230144 4249728 4250799 4277504 4318272 4338264 4346496 4362336 4382532 4429404 4452096 4453218 4478208 4499712 4523904 4544848 4572288 4593456 4618152 4640328 4666368 4691456 4713984 4741632 4780944 4790016 4812192 4856832 4858056 4880547 4889808 4935168 4958016 4967424 5008608 5037984 5062176 5089392 5112954 5167638 5170176 5194112 5195421 5225472 5249664 5277888 5303232 5334336 5378562 5413716 5444096 5463936 5499648 5501034 5552064 5577768 5588352 5614224 5634684 5666304 5667732 5757696 5784352 5785344 5795328 5816448 5843376 5905872 5936128 5937624 5965113 5970944 5999616 6031872 6096384 6124608 6146928 6157536 6187104 6274989 6286896 6316002 6345216 6374592 6386688 6416256 6477408 6507396 6519744 6573798 6610688 6678144 6679827 6717312 6749568 6785856 6817272 6890184 6927228 6960492 6999552 7037184 7070976 7112448 7171416 7185024 7218288 7285248 7332864 7334712 7402752 7437024 7451136 7485632 7512912 7556976 7634088 7669431 7676928 7713792 7751457 7755264 7791168 7874496 7916832 7953484 7954848 8001504 8120574 8166144 8195904 8210048 8211456 8249472 8366652 8382528 8421336 8452026 8499456 8501598 8555008 8636544 8676528 8692992 8724672 8765064 8858808 8904192 8906436 8956416 8999424 9047808 9089696 9144576 9186912 9236304 9280656 9382912 9427968 9474003 9483264 9561888 9580032 9624384 9716112 9761094 9779616 9860697 9870336 9916032 10017216 10075968 10124352 10178784 10225908 10335276 10388224 10390842 10499328 10555776 10606464 10668672 10757124 10827432 10888192 10927872 10999296 11002068 11104128 11155536 11176704 11228448 11269368 11332608 11335464 11515392 11568704 11570688 11590656 11632896 11686752 11811744 11875248 11930226 12063744 12180861 12192768 12249216 12293856 12315072 12374208 12549978 12573792 12632004 12690432 12749184 12832512 12954816 13014792 13039488 13147596 13221376 13356288 13359654 13434624 13499136 13571712 13634544 13780368 13854456 13920984 13999104 14074368 14141952 14224896 14342832 14370048 14436576 14570496 14641641 14669424 14805504 14874048 14902272 14971264 15025824 15113952 15268176 15338862 15502914 15510528 15582336 15586263 15748992 15833664 15906968 15909696 16003008 16241148 16332288 16391808 16420096 16498944 16733304 16765056 16842672 16904052 16998912 17003196 17110016 17273088 17353056 17385984 17449344 17530128 17717616 17808384 17812872 17895339 17912832 17998848 18095616 18179392 18289152 18373824 18472608 18561312 18824967 18948006 19123776 19160064 19248768 19432224 19522188 19559232 19721394 19832064 20034432 20151936 20248704 20357568 20451816 20670552 20776448 20781684 20998656 21111552 21212928 21337344 21514248 21654864 21855744 21998592 22004136 22208256 22311072 22353408 22456896 22538736 22670928 23008293 23030784 23137408 23141376 23265792 23373504 23623488 23750496 23860452 24361722 24498432 24587712 24630144 24748416 25099956 25147584 25264008 25498368 25665024 25909632 26029584 26078976 26295192 26442752 26712576 26719308 26869248 26998272 27143424 27269088 27560736 27708912 27841968 28148736 28283904 28422009 28449792 28685664 28740096 28873152 29283282 29338848 29582091 29611008 29748096 29942528 30051648 30227904 30536352 30677724 31005828 31164672 31172526 31497984 31667328 31813936 31819392 32006016 32482296 32664576 32783616 32840192 32997888 33466608 33530112 33685344 33808104 33997824 34006392 34546176 34706112 34771968 34898688 35060256 35435232 35625744 35790678 36191232 36358784 36578304 36747648 36945216 37122624 37649934 37896012 38247552 38497536 38864448 39044376 39118464 39442788 39664128 40068864 40303872 40497408 40715136 40903632 41341104 41552896 41563368 41997312 42223104 42425856 42674688 43028496 43309728 43711488 43924923 44008272 44416512 44622144 44706816 44913792 45077472 45341856 46016586 46274816 46531584 46747008 46758789 47246976 47500992 47720904 48723444 48996864 49175424 49260288 49496832 50199912 50295168 50528016 50996736 51330048 51819264 52059168 52157952 52590384 53425152 53438616 53686017 53738496 53996544 54286848 54538176 55121472 55417824 55683936 56844018 57371328 57480192 57746304 58566564 58677696 59164182 59496192 59885056 60103296 60455808 61072704 61355448 62011656 62329344 62345052 62995968 63334656 63627872 63638784 64012032 64964592 65567232 65680384 65995776 66933216 67060224 67370688 67616208 68012784 69024879 69092352 69412224 69797376 70120512 70870464 71251488 71581356 72717568 73495296 73890432 74245248 75299868 75792024 76495104 76995072 77728896 78088752 78236928 78885576 79328256 80137728 80607744 80994816 81430272 81807264 82682208 83126736 84446208 84851712 85266027 85349376 86056992 86619456 87849846 88016544 88833024 89244288 89827584 90154944 90683712 92033172 92549632 93494016 93517578 94493952 95001984 95441808 97446888 97993728 98350848 98520576 98993664 100399824 100590336 101056032 101993472 103638528 104118336 104315904 105180768 106877232 107372034 108573696 109076352 110242944 110835648 111367872 113688036 114742656 115492608 117133128 117355392 118328364 118992384 119770112 120206592 120911616 122145408 122710896 124023312 124658688 124690104 125991936 126669312 127255744 127277568 128024064 129929184 131134464 131774769 133866432 134120448 134741376 135232416 136025568 138049758 138824448 139594752 140241024 141740928 142502976 143162712 145435136 146990592 147780864 148490496 150599736 151584048 152990208 153990144 155457792 156177504 156473856 157771152 160275456 161058051 161215488 161989632 162860544 163614528 165364416 166253472 170532054 172113984 173238912 175699692 176033088 178488576 179655168 180309888 181367424 184066344 185099264 186988032 187035156 188987904 190003968 190883616 194893776 196701696 197041152 197987328 200799648 201180672 202112064 207074637 207277056 208236672 210361536 213754464 214744068 218152704 220485888 221671296 222735744 227376072 229485312 230985216 234266256 234710784 236656728 237984768 240413184 241823232 244290816 245421792 248046624 249380208 253338624 254511488 254555136 256048128 259858368 263549538 267732864 269482752 270464832 272051136 276099516 277648896 280482048 283481856 285005952 286325424 290870272 293981184 295561728 296980992 301199472 303168096 305980416 310915584 312355008 312947712 315542304 322116102 325721088 327229056 330728832 332506944 341064108 344227968 346477824 351399384 352066176 356977152 359310336 360619776 362734848 368132688 373976064 374070312 377975808 380007936 381767232 389787552 393403392 401599296 402361344 404224128 414149274 416473344 420723072 427508928 429488136 436305408 440971776 443342592 445471488 454752144 458970624 461970432 468532512 469421568 473313456 480826368 483174153 483646464 488581632 490843584 496093248 498760416 509022976 519716736 527099076 535465728 538965504 540929664 544102272 552199032 555297792 560964096 566963712 570011904 572650848 591123456 593961984 602398944 606336192 621831168 624710016 631084608 644232204 654458112 661457664 665013888 682128216 688455936 692955648 702798768 704132352 713954304 721239552 725469696 736265376 748140624 760015872 763534464 779575104 803198592 808448256 828298548 832946688 841446144 855017856 858976272 872610816 881943552 886685184 890942976 909504288 917941248 937065024 938843136 946626912 966348306 977163264 981687168 992186496 997520832 1018045952 1039433472 1054198152 1070931456 1077931008 1081859328 1088204544 1104398064 1121928192 1133927424 1140023808 1145301696 1204797888 1212672384 1249420032 1262169216 1288464408 1308916224 1322915328 1330027776 1364256432 1376911872 1385911296 1405597536 1408264704 1442479104 1449522459 1450939392 1472530752 1496281248 1527068928 1559150208 1606397184 1616896512 1656597096 1665893376 1682892288 1710035712 1717952544 1773370368 1781885952 1819008576 1874130048 1893253824 1932696612 1963374336 1984372992 1995041664 2036091904 2078866944 2108396304 2141862912 2163718656 2176409088 2208796128 2280047616 2290603392 2409595776 2425344768 2498840064 2524338432 2576928816 2617832448 2645830656 2660055552 2728512864 2753823744 2811195072 2816529408 2899044918 2945061504 2992562496 3054137856 3118300416 3212794368 3233793024 3313194192 3365784576 3420071424 3435905088 3638017152 3748260096 3786507648 3865393224 3926748672 3968745984 3990083328 4157733888 4216792608 4327437312 4352818176 4417592256 4581206784 4819191552 4850689536 4997680128 5048676864 5153857632 5320111104 5457025728 5622390144 5798089836 5890123008 5985124992 6108275712 6236600832 6425588736 6626388384 6840142848 6871810176 7276034304 7496520192 7573015296 7730786448 7853497344 7937491968 7980166656 8433585216 8835184512 9162413568 9638383104 9701379072 10097353728 10307715264 10914051456 11244780288 11596179672 11780246016 11970249984 12473201664 13252776768 13743620352 14552068608 14993040384 15146030592 15461572896 15960333312 16867170432 17670369024 18324827136 19276766208 20615430528 21828102912 22489560576 23192359344 23560492032 23940499968 26505553536 27487240704 29104137216 30292061184 30923145792 33734340864 35340738048 41230861056 43656205824 44979121152 46384718688 47880999936 53011107072 54974481408 61846291584 67468681728 70681476096 82461722112 87312411648 92769437376 106022214144 123692583168 134937363456 164923444224 185538874752 212044428288 247385166336 371077749504 494770332672 742155499008 1484310998016
- Sum of all divisors σ(n): 6185883340800
- Sum of proper divisors (its aliquot sum) s(n): 4701572342784
- 1484310998016 is an abundant number, because the sum of its proper divisors (4701572342784) is greater than itself. Its abundance is 3217261344768
Bases of 1484310998016
- Binary: 101011001100101111101010001101100000000002
- Hexadecimal: 0x15997D46C00
- Base-36: IXVSG000
Squares and roots of 1484310998016
- 1484310998016 squared (14843109980162) is 2203179138831253955936256
- 1484310998016 cubed (14843109980163) is 3270203026366649979148492231038468096
-
The
square root of 1484310998016 is 1218323.0269579575 -
The
cube root of 1484310998016 is 11407.0926367375
Scales and comparisons
How big is 1484310998016?- 1,484,310,998,016 seconds is equal to 47,196 years, 25 weeks, 6 days, 10 hours, 33 minutes, 36 seconds.
-
To count from 1 to 1,484,310,998,016 would take you about one hundred seventeen thousand, nine hundred ninety-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 1484310998016 cubic inches would be around 950.6 feet tall.
Recreational maths with 1484310998016
- 1484310998016 backwards is 6108990134841
- 1484310998016 is a
Harshad number . - The number of decimal digits it has is: 13
- The sum of 1484310998016's digits is 54
- 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 1484310998016 - Facts about the integer". Numbermatics.com. 2024. Web. 13 May 2024.
APA style:
Numbermatics. (2024). Number 1484310998016 - Facts about the integer. Retrieved 13 May 2024, from https://numbermatics.com/n/1484310998016/
Chicago style:
Numbermatics. 2024. "Number 1484310998016 - Facts about the integer". https://numbermatics.com/n/1484310998016/
The information we have on file for 1484310998016 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 1484310998016, math, Factors of 1484310998016, curriculum, school, college, exams, university, Prime factorization of 1484310998016, STEM, science, technology, engineering, physics, economics, calculator, one trillion, four hundred eighty-four billion, three hundred ten million, nine hundred ninety-eight thousand and sixteen.