8138390400

Names of 8138390400

• Cardinal: 8138390400 can be written as Eight billion, one hundred thirty-eight million, three hundred ninety thousand, four hundred.

Scientific notation

• Scientific notation: 8.1383904 × 10⁹

Factors of 8138390400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 169

Divisors of 8138390400

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 28 30 32 35 36 40 42 45 48 49 50 56 60 63 64 70 72 73 75 79 80 84 90 96 98 100 105 112 120 126 128 140 144 146 147 150 158 160 168 175 180 192 196 200 210 219 224 225 237 240 245 252 280 288 292 294 300 315 316 320 336 350 360 365 384 392 395 400 420 438 441 448 450 474 480 490 504 511 525 553 560 576 584 588 600 630 632 640 657 672 700 711 720 730 735 784 790 800 840 876 882 896 900 948 960 980 1008 1022 1050 1095 1106 1120 1152 1168 1176 1185 1200 1225 1260 1264 1314 1344 1400 1422 1440 1460 1470 1533 1568 1575 1580 1600 1659 1680 1752 1764 1800 1825 1896 1920 1960 1975 2016 2044 2100 2190 2205 2212 2240 2336 2352 2370 2400 2450 2520 2528 2555 2628 2688 2765 2800 2844 2880 2920 2940 3066 3136 3150 3160 3200 3285 3318 3360 3504 3528 3555 3577 3600 3650 3675 3792 3871 3920 3950 4032 4088 4200 4380 4410 4424 4480 4599 4672 4704 4740 4800 4900 4977 5040 5056 5110 5256 5475 5530 5600 5688 5760 5767 5840 5880 5925 6132 6272 6300 6320 6570 6636 6720 7008 7056 7110 7154 7200 7300 7350 7584 7665 7742 7840 7900 8064 8176 8295 8400 8760 8820 8848 9198 9344 9408 9480 9600 9800 9954 10080 10112 10220 10512 10731 10950 11025 11060 11200 11376 11534 11613 11680 11760 11850 12264 12600 12640 12775 13140 13272 13440 13825 14016 14112 14220 14308 14400 14600 14700 15168 15330 15484 15680 15800 16352 16425 16590 16800 17301 17520 17640 17696 17775 17885 18396 18816 18960 19355 19600 19908 20160 20440 21024 21462 21900 22050 22120 22400 22752 22995 23068 23226 23360 23520 23700 24528 24885 25200 25280 25550 26280 26544 27650 28032 28224 28440 28616 28800 28835 29200 29400 30336 30660 30968 31360 31600 32193 32704 32850 33180 33600 34602 34839 35040 35280 35392 35550 35770 36792 37920 38325 38710 39200 39816 40320 40369 40880 41475 42048 42924 43800 44100 44240 45504 45990 46136 46452 46720 47040 47400 49056 49770 50400 50560 51100 51903 52560 53088 53655 55300 56448 56880 57232 57670 58065 58400 58800 61320 61936 63200 64386 65408 65700 66360 67200 69204 69678 70080 70560 70784 71100 71540 73584 75840 76650 77420 78400 79632 80738 81760 82950 84096 85848 86505 87600 88200 88480 89425 91008 91980 92272 92904 94080 94800 96775 98112 99540 100800 102200 103806 105120 106176 107310 110600 113760 114464 114975 115340 116130 116800 117600 121107 122640 123872 124425 126400 128772 131400 132720 138408 139356 140160 141120 142200 143080 144175 147168 151680 153300 154840 156800 159264 160965 161476 163520 165900 171696 173010 174195 175200 176400 176960 178850 183960 184544 185808 189600 193550 196224 199080 201600 201845 204400 207612 210240 212352 214620 221200 227520 228928 229950 230680 232260 233600 235200 242214 245280 247744 248850 252800 257544 259515 262800 265440 268275 276816 278712 282240 282583 284400 286160 288350 290325 294336 306600 309680 318528 321930 322952 327040 331800 343392 346020 348390 350400 352800 353920 357700 363321 367920 369088 371616 379200 387100 398160 403690 408800 415224 420480 429240 432525 442400 455040 457856 459900 461360 464520 470400 484428 490560 495488 497700 515088 519030 525600 530880 536550 553632 557424 565166 568800 572320 576700 580650 588672 605535 613200 619360 637056 643860 645904 663600 686784 692040 696780 700800 705600 715400 726642 735840 738176 743232 758400 774200 796320 804825 807380 817600 830448 847749 858480 865050 870975 884800 919800 922720 929040 968856 981120 995400 1009225 1030176 1038060 1051200 1061760 1073100 1107264 1114848 1130332 1137600 1144640 1153400 1161300 1211070 1226400 1238720 1287720 1291808 1297575 1327200 1373568 1384080 1393560 1411200 1412915 1430800 1453284 1471680 1486464 1548400 1592640 1609650 1614760 1635200 1660896 1695498 1716960 1730100 1741950 1769600 1816605 1839600 1845440 1858080 1937712 1990800 2018450 2060352 2076120 2102400 2146200 2214528 2229696 2260664 2275200 2289280 2306800 2322600 2422140 2452800 2477440 2543247 2575440 2583616 2595150 2654400 2768160 2787120 2825830 2861600 2906568 2943360 3027675 3096800 3185280 3219300 3229520 3321792 3390996 3433920 3460200 3483900 3633210 3679200 3690880 3716160 3875424 3981600 4036900 4120704 4152240 4238745 4292400 4459392 4521328 4613600 4645200 4844280 4905600 5086494 5150880 5167232 5190300 5308800 5536320 5574240 5651660 5723200 5813136 6055350 6193600 6438600 6459040 6643584 6781992 6867840 6920400 6967800 7064575 7266420 7358400 7432320 7750848 7963200 8073800 8304480 8477490 8584800 9042656 9083025 9227200 9290400 9688560 10172988 10301760 10380600 11072640 11148480 11303320 11446400 11626272 12110700 12387200 12716235 12877200 12918080 13563984 13840800 13935600 14129150 14532840 14716800 15501696 15926400 16147600 16608960 16954980 17169600 18085312 18166050 18454400 18580800 19377120 20345976 20603520 20761200 21193725 22296960 22606640 23252544 24221400 25432470 25754400 25836160 27127968 27681600 27871200 28258300 29065680 32295200 33217920 33909960 34339200 36170624 36332100 37161600 38754240 40691952 41522400 42387450 45213280 46505088 48442800 50864940 51508800 54255936 55363200 55742400 56516600 58131360 63581175 64590400 67819920 72664200 77508480 81383904 83044800 84774900 90426560 96885600 101729880 103017600 108511872 111484800 113033200 116262720 127162350 129180800 135639840 145328400 162767808 166089600 169549800 180853120 193771200 203459760 226066400 232525440 254324700 271279680 290656800 325535616 339099600 387542400 406919520 452132800 508649400 542559360 581313600 678199200 813839040 904265600 1017298800 1162627200 1356398400 1627678080 2034597600 2712796800 4069195200 8138390400
• Sum of all divisors σ(n): 34677021600
• Sum of proper divisors (its aliquot sum) s(n): 26538631200
• 8138390400 is an abundant number, because the sum of its proper divisors (26538631200) is greater than itself. Its abundance is 18400240800

Bases of 8138390400

• Binary: 111100101000101011111101110000000₂
• Hexadecimal: 0x1E515FB80
• Base-36: 3QLDY80

Squares and roots of 8138390400

• 8138390400 squared (8138390400²) is 66233398302812160000
• 8138390400 cubed (8138390400³) is 539033252906982775947264000000
• The square root of 8138390400 is 90213.0278840035
• The cube root of 8138390400 is 2011.4666654841

Scales and comparisons

• 8,138,390,400 seconds is equal to 258 years, 40 weeks, 2 days, 8 hours.
• To count from 1 to 8,138,390,400 would take you about five hundred seventeen 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 8138390400 cubic inches would be around 167.6 feet tall.

Recreational maths with 8138390400

• 8138390400 backwards is 0040938318
• 8138390400 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 8138390400's digits is 36
• More coming soon!