138928608000

Names of 138928608000

• Cardinal: 138928608000 can be written as One hundred thirty-eight billion, nine hundred twenty-eight million, six hundred eight thousand.

Scientific notation

• Scientific notation: 1.38928608 × 10¹¹

Factors of 138928608000

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 80

Divisors of 138928608000

• Number of divisors d(n): 2880
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 19 20 21 24 25 26 27 28 30 31 32 35 36 38 39 40 42 45 48 50 52 54 56 57 60 62 63 64 65 70 72 75 76 78 80 81 84 90 91 93 95 96 100 104 105 108 112 114 117 120 124 125 126 128 130 133 135 140 144 150 152 155 156 160 162 168 171 175 180 182 186 189 190 192 195 200 208 210 216 217 224 225 228 234 240 247 248 250 252 256 260 266 270 273 279 280 285 288 300 304 310 312 315 320 324 325 336 342 350 351 360 364 372 375 378 380 384 390 399 400 403 405 416 420 432 434 448 450 455 456 465 468 475 480 494 496 500 504 513 520 525 532 540 546 558 560 567 570 576 585 589 600 608 620 624 630 640 648 650 651 665 672 675 684 700 702 720 728 741 744 750 756 760 768 775 780 798 800 806 810 819 832 837 840 855 864 868 875 896 900 910 912 930 936 945 950 960 975 988 992 1000 1008 1026 1040 1050 1053 1064 1080 1085 1092 1116 1120 1125 1134 1140 1152 1170 1178 1197 1200 1209 1216 1235 1240 1248 1260 1280 1296 1300 1302 1330 1344 1350 1365 1368 1395 1400 1404 1425 1440 1456 1482 1488 1500 1512 1520 1539 1550 1560 1575 1596 1600 1612 1620 1625 1638 1664 1674 1680 1710 1728 1729 1736 1750 1755 1767 1792 1800 1820 1824 1860 1872 1890 1900 1920 1950 1953 1976 1984 1995 2000 2015 2016 2025 2052 2080 2100 2106 2128 2160 2170 2184 2223 2232 2240 2250 2268 2275 2280 2304 2325 2340 2356 2375 2394 2400 2418 2432 2457 2470 2480 2496 2511 2520 2565 2592 2600 2604 2625 2660 2688 2700 2730 2736 2790 2800 2808 2821 2835 2850 2880 2912 2925 2945 2964 2976 3000 3024 3040 3078 3100 3120 3150 3192 3200 3224 3240 3250 3255 3276 3325 3328 3348 3360 3375 3420 3456 3458 3472 3500 3510 3534 3591 3600 3627 3640 3648 3705 3720 3744 3780 3800 3840 3875 3900 3906 3952 3968 3990 4000 4030 4032 4050 4095 4104 4123 4160 4185 4200 4212 4256 4275 4320 4340 4368 4446 4464 4480 4500 4536 4550 4560 4650 4680 4712 4725 4750 4788 4800 4836 4864 4875 4914 4940 4960 4992 5022 5040 5130 5184 5187 5200 5208 5250 5265 5301 5320 5376 5400 5425 5460 5472 5580 5600 5616 5642 5670 5700 5760 5824 5850 5859 5890 5928 5952 5985 6000 6045 6048 6080 6156 6175 6200 6240 6300 6384 6400 6448 6480 6500 6510 6552 6650 6669 6696 6720 6750 6825 6840 6912 6916 6944 6975 7000 7020 7068 7125 7182 7200 7254 7280 7296 7371 7410 7440 7488 7560 7600 7657 7695 7750 7800 7812 7875 7904 7936 7980 8000 8060 8064 8100 8190 8208 8246 8320 8370 8400 8424 8463 8512 8550 8640 8645 8680 8736 8775 8835 8892 8928 8960 9000 9072 9100 9120 9300 9360 9424 9450 9500 9576 9600 9672 9750 9765 9828 9880 9920 9975 9984 10044 10075 10080 10125 10260 10368 10374 10400 10416 10500 10530 10602 10640 10773 10800 10850 10881 10920 10944 11115 11160 11200 11232 11284 11340 11375 11400 11520 11625 11648 11700 11718 11780 11856 11904 11970 12000 12090 12096 12160 12285 12312 12350 12369 12400 12480 12555 12600 12768 12825 12896 12960 13000 13020 13104 13300 13338 13392 13440 13500 13650 13680 13832 13888 13950 14000 14040 14105 14136 14175 14250 14364 14400 14508 14560 14592 14625 14725 14742 14820 14880 14976 15120 15200 15314 15390 15500 15561 15600 15624 15750 15808 15903 15960 16000 16120 16128 16200 16275 16380 16416 16492 16625 16640 16740 16800 16848 16926 17024 17100 17280 17290 17360 17472 17550 17577 17670 17784 17856 17955 18000 18135 18144 18200 18240 18525 18600 18720 18848 18900 19000 19152 19200 19344 19500 19530 19656 19760 19840 19950 20007 20088 20150 20160 20250 20475 20520 20615 20736 20748 20800 20832 20925 21000 21060 21204 21280 21375 21546 21600 21700 21762 21840 21888 22230 22320 22400 22464 22568 22680 22750 22800 22971 23250 23296 23400 23436 23560 23625 23712 23808 23940 24000 24180 24192 24320 24570 24624 24700 24738 24800 24960 25110 25200 25389 25536 25650 25792 25920 25935 26000 26040 26208 26325 26505 26600 26676 26784 26880 27000 27125 27300 27360 27664 27776 27900 28000 28080 28210 28272 28350 28500 28728 28800 29016 29120 29250 29295 29450 29484 29640 29760 29925 29952 30225 30240 30400 30628 30780 30875 31000 31122 31200 31248 31500 31616 31806 31920 32000 32240 32400 32550 32643 32760 32832 32984 33250 33345 33480 33600 33696 33852 34048 34125 34200 34560 34580 34720 34875 34944 35100 35154 35340 35568 35712 35910 36000 36270 36288 36400 36480 36855 37050 37107 37200 37440 37696 37800 38000 38285 38304 38475 38688 39000 39060 39312 39520 39680 39900 40014 40176 40300 40320 40500 40950 41040 41230 41496 41600 41664 41850 42000 42120 42315 42408 42560 42750 43092 43200 43225 43400 43524 43680 43776 43875 44175 44460 44640 44800 44928 45136 45360 45500 45600 45942 46500 46683 46800 46872 47120 47250 47424 47709 47880 48000 48360 48384 48825 49140 49248 49400 49476 49600 49875 49920 50220 50375 50400 50778 51072 51300 51584 51840 51870 52000 52080 52416 52650 53010 53200 53352 53568 53599 53865 54000 54250 54405 54600 54720 55328 55552 55575 55800 56000 56160 56420 56544 56700 57000 57456 57600 58032 58240 58500 58590 58900 58968 59280 59520 59850 60450 60480 60800 61256 61425 61560 61750 61845 62000 62244 62400 62496 62775 63000 63232 63612 63840 64125 64480 64800 65100 65286 65520 65664 65968 66500 66690 66960 67200 67392 67704 68250 68400 68913 69160 69440 69750 69888 70200 70308 70525 70680 70875 71136 71424 71820 72000 72540 72576 72800 72960 73625 73710 74100 74214 74400 74880 75392 75600 76000 76167 76570 76608 76950 77376 77805 78000 78120 78624 79040 79515 79800 80028 80352 80600 80640 81000 81375 81900 82080 82460 82992 83200 83328 83700 84000 84240 84630 84816 85120 85500 86184 86400 86450 86800 87048 87360 87750 87885 88350 88920 89280 89775 89856 90272 90675 90720 91000 91200 91884 92625 93000 93366 93600 93744 94240 94500 94848 95418 95760 96000 96720 97650 98280 98496 98800 98952 99200 99750 100035 100440 100750 100800 101556 102144 102375 102600 103075 103168 103680 103740 104000 104160 104625 104832 105300 106020 106400 106704 107136 107198 107730 108000 108500 108810 109200 109440 110656 111150 111321 111600 112000 112320 112840 113088 113400 114000 114855 114912 116064 116480 117000 117180 117800 117936 118560 119040 119700 120900 120960 121600 122512 122850 123120 123500 123690 124000 124488 124800 124992 125550 126000 126945 127224 127680 128250 128960 129600 129675 130200 130572 131040 131328 131625 131936 132525 133000 133380 133920 134400 134784 135408 136500 136800 137826 138320 138880 139500 140049 140400 140616 141050 141360 141750 142272 143640 144000 145080 145152 145600 146475 147250 147420 148200 148428 148800 149625 149760 150784 151125 151200 152000 152334 153140 153216 153900 154752 155610 156000 156240 157248 158080 159030 159600 160056 160704 160797 161200 162000 162750 163215 163800 164160 164920 165984 166656 166725 167400 168000 168480 169260 169632 170240 171000 172368 172800 172900 173600 174096 174720 175500 175770 176700 177840 178560 179550 180544 181350 181440 182000 182400 183768 184275 185250 185535 186000 186732 187200 187488 188480 189000 189696 190836 191425 191520 192375 193440 195300 196560 196992 197600 197904 198400 199500 200070 200880 201500 201600 203112 204750 205200 206150 206739 207480 208000 208320 209250 209664 210600 211575 212040 212800 213408 214272 214396 215460 216000 216125 217000 217620 218400 218880 220875 221312 222300 222642 223200 224000 224640 225680 226176 226800 228000 228501 229710 229824 232128 233415 234000 234360 235600 235872 237120 238545 239400 241800 241920 244125 245024 245700 246240 247000 247380 248000 248976 249600 249984 251100 252000 253890 254448 255360 256500 257920 259200 259350 260400 261144 262080 263250 263872 265050 266000 266760 267840 267995 269325 269568 270816 272025 273000 273600 275652 276640 277760 277875 279000 280098 280800 281232 282100 282720 283500 284544 287280 288000 290160 291200 292950 294500 294840 296400 296856 297600 299250 302250 302400 304000 304668 306280 306432 307125 307800 309225 309504 311220 312000 312480 313875 314496 316160 318060 319200 320112 321408 321594 322400 324000 325500 326430 327600 328320 329840 331968 333450 333963 334800 336000 336960 338520 339264 342000 344565 344736 345800 347200 348192 349440 351000 351540 352625 353400 355680 357120 359100 361088 362700 362880 364000 364800 367536 368550 370500 371070 372000 373464 374400 374976 376960 378000 380835 381672 382850 383040 384750 386880 389025 390600 393120 393984 395200 395808 397575 399000 400140 401760 403000 403200 406224 409500 410400 412300 413478 414960 416000 416640 418500 421200 423150 424080 425600 426816 428792 430920 432000 432250 434000 435240 436800 439425 441750 442624 444600 445284 446400 448875 449280 451360 452352 453375 453600 456000 457002 459420 459648 464256 466830 468000 468720 471200 471744 474240 477090 478800 482391 483600 488250 490048 491400 492480 494000 494760 496000 497952 499968 500175 502200 504000 507780 508896 510720 513000 515375 515840 518400 518700 520800 522288 524160 526500 527744 530100 532000 533520 535680 535990 538650 541632 544050 546000 547200 551304 553280 555750 556605 558000 560196 561600 562464 564200 565440 567000 569088 574275 574560 580320 582400 585900 589000 589680 592800 593712 595200 598500 604500 604800 608000 609336 612560 614250 615600 618450 620217 622440 624000 624960 627750 628992 634725 636120 638400 640224 642816 643188 644800 648000 648375 651000 652860 655200 656640 659680 662625 663936 666900 667926 669600 672000 673920 677040 678528 684000 689130 689472 691600 694400 696384 700245 702000 703080 705250 706800 711360 718200 722176 725400 725760 728000 732375 735072 737100 741000 742140 744000 746928 748800 749952 753920 756000 761670 763344 765700 766080 769500 773760 778050 781200 786240 790400 791616 795150 798000 800280 803520 803985 806000 812448 816075 819000 820800 824600 826956 829920 833280 833625 837000 842400 846300 848160 851200 853632 857584 861840 864000 864500 868000 870480 873600 878850 883500 889200 890568 892800 897750 902720 906750 907200 912000 914004 918840 919296 921375 927675 928512 933660 936000 937440 942400 943488 948480 954180 957125 957600 964782 967200 976500 980096 982800 984960 988000 989520 992000 995904 1000350 1004400 1008000 1015560 1017792 1026000 1030750 1033695 1037400 1041600 1044576 1048320 1053000 1055488 1057875 1060200 1064000 1067040 1071360 1071980 1077300 1083264 1088100 1092000 1094400 1102608 1106560 1111500 1113210 1116000 1120392 1123200 1124928 1128400 1130880 1134000 1142505 1148550 1149120 1160640 1167075 1171800 1178000 1179360 1185600 1187424 1192725 1197000 1209000 1209600 1218672 1225120 1228500 1231200 1236900 1240434 1244880 1248000 1249920 1255500 1269450 1272240 1276800 1280448 1286376 1289600 1296000 1296750 1302000 1305720 1310400 1319360 1325250 1327872 1333800 1335852 1339200 1339975 1346625 1347840 1354080 1357056 1360125 1368000 1378260 1378944 1383200 1388800 1392768 1400490 1404000 1406160 1410500 1413600 1422720 1436400 1447173 1450800 1456000 1464750 1470144 1474200 1482000 1484280 1488000 1493856 1499904 1512000 1523340 1526688 1531400 1532160 1539000 1546125 1547520 1556100 1562400 1572480 1580800 1583232 1590300 1596000 1600560 1607040 1607970 1612000 1624896 1632150 1638000 1641600 1649200 1653912 1659840 1667250 1669815 1674000 1684800 1692600 1696320 1707264 1715168 1722825 1723680 1729000 1736000 1740960 1747200 1757700 1767000 1778400 1781136 1785600 1795500 1805440 1813500 1814400 1824000 1828008 1837680 1842750 1855350 1867320 1872000 1874880 1884800 1886976 1904175 1908360 1914250 1915200 1929564 1934400 1945125 1953000 1960192 1965600 1969920 1976000 1979040 1987875 1991808 2000700 2008800 2016000 2031120 2035584 2052000 2061500 2067390 2074800 2083200 2089152 2106000 2115750 2120400 2128000 2134080 2143960 2154600 2166528 2176200 2184000 2197125 2205216 2213120 2223000 2226420 2232000 2240784 2246400 2249856 2256800 2261760 2268000 2285010 2297100 2298240 2321280 2334150 2343600 2356000 2358720 2371200 2374848 2385450 2394000 2411955 2418000 2437344 2450240 2457000 2462400 2473800 2480868 2489760 2499840 2500875 2511000 2538900 2544480 2553600 2560896 2572752 2579200 2592000 2593500 2604000 2611440 2620800 2638720 2650500 2667600 2671704 2678400 2679950 2693250 2708160 2720250 2736000 2756520 2757888 2766400 2783025 2785536 2800980 2808000 2812320 2821000 2827200 2845440 2871375 2872800 2894346 2901600 2912000 2929500 2940288 2948400 2964000 2968560 2976000 2987712 3024000 3046680 3053376 3062800 3078000 3092250 3101085 3112200 3124800 3144960 3166464 3173625 3180600 3192000 3201120 3214080 3215940 3224000 3249792 3264300 3276000 3283200 3298400 3307824 3319680 3334500 3339630 3348000 3369600 3385200 3392640 3430336 3445650 3447360 3458000 3472000 3481920 3501225 3515400 3534000 3556800 3562272 3591000 3610880 3627000 3628800 3656016 3675360 3685500 3710700 3734640 3744000 3749760 3769600 3808350 3816720 3828500 3830400 3859128 3868800 3890250 3906000 3931200 3952000 3958080 3975750 3983616 4001400 4017600 4019925 4062240 4071168 4080375 4104000 4123000 4134780 4149600 4166400 4178304 4212000 4231500 4240800 4256000 4268160 4287920 4309200 4341519 4352400 4368000 4394250 4410432 4446000 4452840 4464000 4481568 4499712 4513600 4536000 4570020 4594200 4596480 4638375 4642560 4668300 4687200 4712000 4717440 4742400 4749696 4770900 4788000 4823910 4836000 4874688 4900480 4914000 4924800 4947600 4961736 4979520 5001750 5022000 5077800 5088960 5121792 5145504 5168475 5187000 5208000 5222880 5241600 5277440 5301000 5335200 5343408 5356800 5359900 5386500 5416320 5440500 5472000 5513040 5532800 5566050 5601960 5616000 5624640 5642000 5654400 5712525 5742750 5745600 5788692 5803200 5835375 5859000 5880576 5896800 5928000 5937120 5963625 5975424 6048000 6093360 6106752 6125600 6156000 6184500 6202170 6224400 6249600 6347250 6361200 6384000 6402240 6431880 6448000 6499584 6528600 6552000 6596800 6615648 6639360 6669000 6679260 6696000 6699875 6739200 6770400 6785280 6860672 6891300 6894720 6916000 6944000 6963840 7002450 7030800 7068000 7113600 7124544 7182000 7235865 7254000 7312032 7350720 7371000 7421400 7469280 7499520 7616700 7633440 7657000 7660800 7718256 7737600 7780500 7812000 7862400 7904000 7916160 7951500 8002800 8035200 8039850 8124480 8160750 8208000 8246000 8269560 8299200 8349075 8356608 8424000 8463000 8481600 8536320 8575840 8614125 8618400 8683038 8704800 8736000 8788500 8820864 8892000 8905680 8928000 8963136 9027200 9072000 9140040 9188400 9276750 9336600 9374400 9424000 9434880 9499392 9520875 9541800 9576000 9647820 9672000 9749376 9800960 9828000 9849600 9895200 9923472 9959040 10003500 10044000 10155600 10177920 10291008 10336950 10374000 10416000 10445760 10602000 10670400 10686816 10719800 10773000 10832640 10881000 11026080 11065600 11132100 11203920 11232000 11249280 11284000 11308800 11425050 11485500 11491200 11577384 11606400 11670750 11718000 11793600 11856000 11874240 11927250 11950848 12059775 12186720 12213504 12251200 12312000 12369000 12404340 12448800 12499200 12694500 12722400 12768000 12804480 12863760 12896000 13057200 13104000 13193600 13231296 13338000 13358520 13392000 13399750 13540800 13721344 13782600 13789440 13832000 13915125 13927680 14004900 14061600 14136000 14227200 14249088 14364000 14471730 14508000 14624064 14701440 14742000 14842800 14938560 15233400 15266880 15314000 15436512 15505425 15561000 15624000 15724800 15832320 15903000 16005600 16070400 16079700 16248960 16321500 16416000 16492000 16539120 16598400 16698150 16848000 16926000 16963200 17151680 17228250 17236800 17366076 17409600 17506125 17577000 17641728 17784000 17811360 17926272 18054400 18144000 18280080 18376800 18553500 18673200 18748800 18848000 19041750 19083600 19152000 19295640 19344000 19498752 19656000 19790400 19846944 19918080 20007000 20088000 20099625 20311200 20355840 20582016 20673900 20748000 20832000 20891520 21204000 21340800 21373632 21439600 21546000 21707595 21762000 22052160 22264200 22407840 22498560 22568000 22850100 22971000 22982400 23154768 23212800 23341500 23436000 23587200 23712000 23748480 23854500 24119550 24373440 24502400 24624000 24738000 24808680 24897600 25389000 25444800 25608960 25727520 25842375 26114400 26208000 26387200 26462592 26676000 26717040 26784000 26799500 27081600 27565200 27664000 27830250 28009800 28123200 28272000 28498176 28562625 28728000 28943460 29016000 29248128 29402880 29484000 29685600 29877120 30466800 30533760 30628000 30873024 31010850 31122000 31248000 31806000 32011200 32159400 32497920 32643000 32984000 33078240 33196800 33396300 33696000 33852000 33926400 34303360 34456500 34473600 34732152 34819200 35012250 35154000 35568000 35622720 35852544 36179325 36560160 36753600 37107000 37346400 37497600 38083500 38167200 38304000 38591280 38688000 39312000 39580800 39693888 40014000 40176000 40199250 40622400 41164032 41347800 41496000 41745375 41783040 42408000 42681600 42747264 42879200 43092000 43415190 43524000 44104320 44528400 44815680 45136000 45700200 45942000 46309536 46683000 46872000 47174400 47496960 47709000 48239100 48746880 49004800 49248000 49476000 49617360 49795200 50778000 50889600 51455040 51684750 52228800 52925184 53352000 53434080 53599000 54163200 55130400 55328000 55660500 56019600 56246400 56544000 57125250 57456000 57886920 58032000 58496256 58968000 59371200 59754240 60298875 60933600 61067520 61256000 61746048 62021700 62244000 62496000 63612000 64022400 64318800 65286000 65968000 66156480 66792600 67704000 68606720 68913000 68947200 69464304 69638400 70024500 70308000 71136000 71245440 72358650 73120320 73507200 74214000 74692800 76167000 76334400 77182560 77527125 78624000 79161600 79387776 80028000 80352000 80398500 81244800 82695600 82992000 83490750 84816000 85494528 85758400 86184000 86830380 87048000 88208640 89056800 89631360 90272000 91400400 91884000 92619072 93366000 93744000 95418000 96478200 97493760 98952000 99234720 99590400 101556000 101779200 102910080 103369500 104457600 106704000 106868160 107198000 108537975 110260800 111321000 112039200 112492800 114250500 114912000 115773840 116064000 117936000 118742400 120597750 121867200 122512000 123492096 124043400 124488000 127224000 128044800 128637600 130572000 131936000 132312960 133585200 135408000 137826000 138928608 140049000 140616000 142490880 144717300 146240640 147014400 148428000 149385600 152334000 152668800 154365120 155054250 158775552 160056000 160797000 162489600 165391200 165984000 166981500 169632000 171516800 172368000 173660760 174096000 178113600 179262720 180896625 182800800 183768000 185238144 186732000 187488000 190836000 192956400 197904000 198469440 203112000 205820160 206739000 208915200 213408000 213736320 214396000 217075950 220521600 222642000 224078400 228501000 231547680 235872000 237484800 241195500 243734400 245024000 248086800 248976000 254448000 257275200 261144000 264625920 267170400 270816000 275652000 277857216 280098000 281232000 289434600 292481280 296856000 298771200 304668000 305337600 308730240 310108500 320112000 321594000 330782400 333963000 343033600 344736000 347321520 348192000 356227200 361793250 365601600 367536000 370476288 373464000 381672000 385912800 395808000 396938880 406224000 413478000 427472640 428792000 434151900 441043200 445284000 448156800 457002000 463095360 482391000 487468800 496173600 497952000 508896000 514550400 522288000 534340800 542689875 551304000 555714432 560196000 562464000 578869200 593712000 609336000 617460480 620217000 640224000 643188000 661564800 667926000 694643040 712454400 723586500 731203200 735072000 746928000 763344000 771825600 793877760 812448000 826956000 857584000 868303800 890568000 896313600 914004000 926190720 964782000 992347200 1029100800 1044576000 1068681600 1085379750 1102608000 1111428864 1120392000 1157738400 1187424000 1218672000 1240434000 1286376000 1323129600 1335852000 1389286080 1447173000 1462406400 1493856000 1526688000 1543651200 1653912000 1715168000 1736607600 1781136000 1828008000 1852381440 1929564000 1984694400 2137363200 2170759500 2205216000 2240784000 2315476800 2437344000 2480868000 2572752000 2671704000 2778572160 2894346000 3087302400 3307824000 3473215200 3562272000 3656016000 3859128000 3969388800 4341519000 4481568000 4630953600 4961736000 5145504000 5343408000 5557144320 5788692000 6615648000 6946430400 7312032000 7718256000 8683038000 9261907200 9923472000 10686816000 11577384000 13892860800 15436512000 17366076000 19846944000 23154768000 27785721600 34732152000 46309536000 69464304000 138928608000
• Sum of all divisors σ(n): 691399188480
• Sum of proper divisors (its aliquot sum) s(n): 552470580480
• 138928608000 is an abundant number, because the sum of its proper divisors (552470580480) is greater than itself. Its abundance is 413541972480

Bases of 138928608000

• Binary: 10000001011000110010100101001100000000₂
• Hexadecimal: 0x2058CA5300
• Base-36: 1RTMI800

Squares and roots of 138928608000

• 138928608000 squared (138928608000²) is 19301158120817664000000
• 138928608000 cubed (138928608000³) is 2681483030513093881331712000000000
• The square root of 138928608000 is 372731.2812201303
• The cube root of 138928608000 is 5179.2144622573

Scales and comparisons

• 138,928,608,000 seconds is equal to 4,417 years, 26 weeks.
• To count from 1 to 138,928,608,000 would take you about eight thousand, eight hundred thirty-five 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 138928608000 cubic inches would be around 431.6 feet tall.

Recreational maths with 138928608000

• 138928608000 backwards is 000806829831
• 138928608000 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138928608000's digits is 45
• More coming soon!