81729081070
81,729,081,070 is an even composite number composed of six prime numbers multiplied together.
81729081070 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 81729081070:
2 × 5 × 72 × 133 × 312 × 79
(2 × 5 × 7 × 7 × 13 × 13 × 13 × 31 × 31 × 79)See below for interesting mathematical facts about the number 81729081070 from the Numbermatics database.
Names of 81729081070
- Cardinal: 81729081070 can be written as Eighty-one billion, seven hundred twenty-nine million, eighty-one thousand and seventy.
Scientific notation
- Scientific notation: 8.172908107 × 1010
Factors of 81729081070
Divisors of 81729081070
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 5 7 10 13 14 26 31 35 49 62 65 70 79 91 98 130 155 158 169 182 217 245 310 338 395 403 434 455 490 553 637 790 806 845 910 961 1027 1085 1106 1183 1274 1519 1690 1922 2015 2054 2170 2197 2366 2449 2765 2821 3038 3185 3871 4030 4394 4805 4898 5135 5239 5530 5642 5915 6370 6727 7189 7595 7742 8281 9610 10270 10478 10985 11830 12245 12493 13351 13454 14105 14378 15190 15379 16562 17143 19355 19747 21970 24490 24986 26195 26702 28210 30758 31837 33635 34286 35945 36673 38710 39494 41405 47089 50323 52390 62465 63674 66755 67270 68107 71890 73346 75919 76895 82810 85715 87451 93457 94178 98735 100646 107653 120001 124930 133510 136214 151838 153790 159185 162409 171430 173563 174902 183365 186914 197470 215306 222859 235445 240002 251615 256711 318370 324818 340535 347126 366730 379595 413881 437255 445718 467285 470890 476749 503230 513422 531433 538265 600005 612157 654199 681070 759190 812045 827762 867815 874510 934570 953498 986947 1062866 1076530 1114295 1136863 1200010 1214941 1224314 1283555 1308398 1560013 1624090 1735630 1973894 2069405 2111317 2228590 2273726 2383745 2429882 2567110 2657165 2897167 3060785 3120026 3270995 3337243 3720031 4138810 4222634 4767490 4934735 5314330 5380453 5684315 5794334 6074705 6121570 6541990 6674486 6908629 7440062 7800065 7958041 8504587 9869470 10556585 10760906 11368630 12149410 12830311 13817258 14485835 14779219 15600130 15916082 16686215 17009174 18600155 20280169 21113170 25660622 26902265 28971670 29558438 33372430 34543145 37200310 37663171 39790205 40560338 42522935 48360403 53804530 64151555 69086290 73896095 75326342 79580410 85045870 89812177 96720806 101400845 103454533 128303110 147792190 166794043 179624354 188315855 202801690 206909066 241802015 263642197 333588086 376631710 449060885 483604030 517272665 527284394 628685239 833970215 898121770 1034545330 1167558301 1257370478 1318210985 1667940430 2335116602 2636421970 3143426195 5837791505 6286852390 8172908107 11675583010 16345816214 40864540535 81729081070
- Sum of all divisors σ(n): 193982947200
- Sum of proper divisors (its aliquot sum) s(n): 112253866130
- 81729081070 is an abundant number, because the sum of its proper divisors (112253866130) is greater than itself. Its abundance is 30524785060
Bases of 81729081070
- Binary: 10011000001110110111011001110111011102
- Hexadecimal: 0x13076ECEEE
- Base-36: 11JNDUJY
Squares and roots of 81729081070
- 81729081070 squared (817290810702) is 6679642692546632344900
- 81729081070 cubed (817290810703) is 545921059137776799671816301043000
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The
square root of 81729081070 is 285882.9849256511 -
The
cube root of 81729081070 is 4339.6916447587
Scales and comparisons
How big is 81729081070?- 81,729,081,070 seconds is equal to 2,598 years, 38 weeks, 10 hours, 31 minutes, 10 seconds.
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To count from 1 to 81,729,081,070 would take you about five thousand, one hundred ninety-seven 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 81729081070 cubic inches would be around 361.6 feet tall.
Recreational maths with 81729081070
- 81729081070 backwards is 07018092718
- The number of decimal digits it has is: 11
- The sum of 81729081070's digits is 43
- More coming soon!
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