81313390400
81,313,390,400 is an even composite number composed of seven prime numbers multiplied together.
81313390400 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of six hundred seventy-two divisors.
Prime factorization of 81313390400:
26 × 52 × 11 × 23 × 37 × 61 × 89
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 11 × 23 × 37 × 61 × 89)See below for interesting mathematical facts about the number 81313390400 from the Numbermatics database.
Names of 81313390400
- Cardinal: 81313390400 can be written as Eighty-one billion, three hundred thirteen million, three hundred ninety thousand, four hundred.
Scientific notation
- Scientific notation: 8.13133904 × 1010
Factors of 81313390400
Divisors of 81313390400
- Number of divisors d(n): 672
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Complete list of divisors:
1 2 4 5 8 10 11 16 20 22 23 25 32 37 40 44 46 50 55 61 64 74 80 88 89 92 100 110 115 122 148 160 176 178 184 185 200 220 230 244 253 275 296 305 320 352 356 368 370 400 407 440 445 460 488 506 550 575 592 610 671 704 712 736 740 800 814 851 880 890 920 925 976 979 1012 1100 1150 1184 1220 1265 1342 1403 1424 1472 1480 1525 1600 1628 1702 1760 1780 1840 1850 1952 1958 2024 2035 2047 2200 2225 2257 2300 2368 2440 2530 2684 2806 2848 2960 3050 3256 3293 3355 3404 3520 3560 3680 3700 3904 3916 4048 4070 4094 4255 4400 4450 4514 4600 4880 4895 5060 5368 5429 5612 5696 5920 6100 6325 6512 6586 6710 6808 7015 7120 7360 7400 7832 8096 8140 8188 8510 8800 8900 9028 9200 9361 9760 9790 10120 10175 10235 10736 10858 11224 11285 11840 12200 12650 13024 13172 13420 13616 14030 14240 14800 15433 15664 16192 16280 16376 16465 16775 17020 17600 17800 18056 18400 18722 19520 19580 20240 20350 20470 21275 21472 21716 22448 22517 22570 24400 24475 24827 25300 26048 26344 26840 27145 27232 28060 28480 29600 30866 31328 32560 32752 32930 33550 34040 35075 35600 36112 36223 36800 37444 39160 40480 40700 40940 42550 42944 43432 44896 45034 45140 46805 48800 48950 49654 50600 51175 51911 52688 53680 54290 54464 56120 56425 59200 59719 61732 62656 65120 65504 65860 67100 68080 70150 71200 72224 72446 74888 75739 77165 78320 80960 81400 81880 82325 85100 86864 89792 90068 90280 93610 97600 97900 99308 101200 102350 103822 105376 107360 108580 112240 112585 112850 119438 123464 124135 124867 130240 131008 131720 134200 135725 136160 140300 142400 144448 144892 149776 151478 154330 156640 162800 163760 164650 170200 173728 180136 180560 181115 187220 195800 198616 200873 202400 204700 207644 210752 214720 217160 224480 225170 225700 234025 238876 246928 248270 249734 259555 263440 268400 271450 272320 280600 289784 298595 299552 302956 308660 313280 325600 327520 329300 340400 347456 360272 361120 362230 374440 378695 385825 391600 397232 401746 404800 409400 415288 434320 448960 450340 451400 468050 477752 493856 496540 499468 519110 526880 536800 542900 561200 562925 571021 579568 597190 599104 605912 617320 620675 624335 651200 655040 658600 680800 720544 722240 724460 748880 757390 771650 783200 794464 803492 818800 830576 833129 868640 900680 902800 905575 936100 955504 987712 993080 998936 1004365 1038220 1053760 1073600 1085800 1122400 1125850 1142042 1159136 1194380 1211824 1234640 1241350 1248670 1297775 1317200 1361600 1373537 1441088 1448920 1492975 1497760 1514780 1543300 1566400 1588928 1606984 1637600 1661152 1666258 1737280 1801360 1805600 1811150 1872200 1893475 1911008 1986160 1997872 2008730 2076440 2171600 2209603 2244800 2251700 2284084 2318272 2388760 2423648 2469280 2482700 2497340 2595550 2634400 2747074 2855105 2897840 2985950 2995520 3029560 3086600 3121675 3213968 3275200 3322304 3332516 3602720 3611200 3622300 3744400 3786950 3822016 3972320 3995744 4017460 4152880 4165645 4343200 4419206 4503400 4568168 4620079 4777520 4847296 4938560 4965400 4994680 5021825 5191100 5268800 5494148 5710210 5795680 5971900 6059120 6173200 6243350 6427936 6665032 6867685 7205440 7244600 7488800 7573900 7944640 7991488 8034920 8305760 8331290 8686400 8838412 9006800 9136336 9240158 9555040 9930800 9989360 10043650 10382200 10988296 11048015 11420420 11591360 11943800 12118240 12346400 12486700 12855872 13330064 13735370 14275525 14489200 14977600 15147800 16069840 16611520 16662580 17676824 18013600 18272672 18480316 19110080 19861600 19978720 20087300 20764400 20828225 21976592 22096030 22840840 23100395 23887600 24236480 24692800 24973400 26660128 27470740 28551050 28978400 30295600 32139680 33325160 34338425 35353648 36027200 36545344 36960632 39723200 39957440 40174600 41528800 41656450 43953184 44192060 45681680 46200790 47775200 49946800 50820869 53320256 54941480 55240075 57102100 57956800 60591200 64279360 66650320 68676850 70707296 73921264 80349200 83057600 83312900 87906368 88384120 91363360 92401580 95550400 99893600 101641738 109882960 110480150 114204200 115501975 121182400 133300640 137353700 141414592 147842528 160698400 166625800 176768240 182726720 184803160 199787200 203283476 219765920 220960300 228408400 231003950 254104345 266601280 274707400 295685056 321396800 333251600 353536480 369606320 406566952 439531840 441920600 456816800 462007900 508208690 549414800 666503200 707072960 739212640 813133904 883841200 913633600 924015800 1016417380 1098829600 1270521725 1333006400 1478425280 1626267808 1767682400 1848031600 2032834760 2197659200 2541043450 3252535616 3535364800 3696063200 4065669520 5082086900 7392126400 8131339040 10164173800 16262678080 20328347600 40656695200 81313390400
- Sum of all divisors σ(n): 240422826240
- Sum of proper divisors (its aliquot sum) s(n): 159109435840
- 81313390400 is an abundant number, because the sum of its proper divisors (159109435840) is greater than itself. Its abundance is 77796045440
Bases of 81313390400
- Binary: 10010111011101010011111011111010000002
- Hexadecimal: 0x12EEA7DF40
- Base-36: 11CRW5KW
Squares and roots of 81313390400
- 81313390400 squared (813133904002) is 6611867458342812160000
- 81313390400 cubed (813133904003) is 537633359913284822199947264000000
-
The
square root of 81313390400 is 285155.0287124531 -
The
cube root of 81313390400 is 4332.3216183799
Scales and comparisons
How big is 81313390400?- 81,313,390,400 seconds is equal to 2,585 years, 26 weeks, 5 days, 4 hours, 53 minutes, 20 seconds.
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To count from 1 to 81,313,390,400 would take you about five thousand, one hundred seventy-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 81313390400 cubic inches would be around 361 feet tall.
Recreational maths with 81313390400
- 81313390400 backwards is 00409331318
- 81313390400 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81313390400's digits is 32
- More coming soon!
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The information we have on file for 81313390400 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!
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