81375736728
81,375,736,728 is an even composite number composed of seven prime numbers multiplied together.
81375736728 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81375736728:
23 × 3 × 11 × 13 × 19 × 1072 × 109
(2 × 2 × 2 × 3 × 11 × 13 × 19 × 107 × 107 × 109)See below for interesting mathematical facts about the number 81375736728 from the Numbermatics database.
Names of 81375736728
- Cardinal: 81375736728 can be written as Eighty-one billion, three hundred seventy-five million, seven hundred thirty-six thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 8.1375736728 × 1010
Factors of 81375736728
Divisors of 81375736728
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 6 8 11 12 13 19 22 24 26 33 38 39 44 52 57 66 76 78 88 104 107 109 114 132 143 152 156 209 214 218 228 247 264 286 312 321 327 418 428 429 436 456 494 572 627 642 654 741 836 856 858 872 988 1144 1177 1199 1254 1284 1308 1391 1417 1482 1672 1716 1976 2033 2071 2354 2398 2508 2568 2616 2717 2782 2834 2964 3432 3531 3597 4066 4142 4173 4251 4708 4796 5016 5434 5564 5668 5928 6099 6213 7062 7194 8132 8151 8284 8346 8502 9416 9592 10868 11128 11336 11449 11663 12198 12426 14124 14388 15301 15587 16264 16302 16568 16692 17004 21736 22363 22781 22898 23326 24396 24852 26429 26923 28248 28776 30602 31174 32604 33384 34008 34347 34989 44726 45562 45796 45903 46652 46761 48792 49704 52858 53846 61204 62348 65208 67089 68343 68694 69978 79287 80769 89452 91124 91592 91806 93304 93522 105716 107692 122408 124696 125939 128293 134178 136686 137388 139956 148837 151619 158574 161538 178904 182248 183612 187044 211432 215384 217531 221597 251878 256586 268356 273372 274776 279912 290719 296153 297674 303238 317148 323076 367224 374088 377817 384879 435062 443194 446511 454857 503756 513172 536712 546744 581438 592306 595348 606476 634296 646152 652593 664791 755634 769758 870124 872157 886388 888459 893022 909714 1007512 1026344 1162876 1184612 1190696 1212952 1247941 1305186 1329582 1511268 1539516 1637207 1667809 1740248 1744314 1772776 1776918 1786044 1819428 2325752 2369224 2392841 2437567 2495882 2610372 2659164 2827903 2880761 3022536 3079032 3274414 3335618 3488628 3553836 3572088 3638856 3743823 4785682 4875134 4911621 4991764 5003427 5220744 5318328 5655806 5761522 6548828 6671236 6977256 7107672 7178523 7312701 7487646 8483709 8642283 9571364 9750268 9823242 9983528 10006854 11311612 11523044 13097656 13342472 13727351 14357046 14625402 14975292 16223233 16967418 17284566 19142728 19500536 19646484 20013708 22623224 23046088 23710879 27454702 28714092 29250804 29950584 31106933 31688371 32446466 33934836 34569132 39292968 40027416 41182053 47421758 48669699 54909404 57428184 58501608 62213866 63376742 64892932 67869672 69138264 71132637 82364106 93320799 94843516 95065113 97339398 109818808 124427732 126753484 129785864 142265274 164728212 178455563 186641598 189687032 190130226 194678796 248855464 253506968 260819669 284530548 308241427 329456424 356911126 373283196 380260452 389357592 521639338 535366689 569061096 616482854 713822252 746566392 760520904 782459007 924724281 1043278676 1070733378 1232965708 1427644504 1564918014 1849448562 2086557352 2141466756 2465931416 3129836028 3390655697 3698897124 4282933512 6259672056 6781311394 7397794248 10171967091 13562622788 20343934182 27125245576 40687868364 81375736728
- Sum of all divisors σ(n): 256288032000
- Sum of proper divisors (its aliquot sum) s(n): 174912295272
- 81375736728 is an abundant number, because the sum of its proper divisors (174912295272) is greater than itself. Its abundance is 93536558544
Bases of 81375736728
- Binary: 10010111100100101111100110011100110002
- Hexadecimal: 0x12F25F3398
- Base-36: 11DT0GBC
Squares and roots of 81375736728
- 81375736728 squared (813757367282) is 6622010528024768145984
- 81375736728 cubed (813757367283) is 538870985338587798510834654500352
-
The
square root of 81375736728 is 285264.3278224601 -
The
cube root of 81375736728 is 4333.4285920255
Scales and comparisons
How big is 81375736728?- 81,375,736,728 seconds is equal to 2,587 years, 25 weeks, 5 days, 19 hours, 18 minutes, 48 seconds.
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To count from 1 to 81,375,736,728 would take you about five thousand, one hundred seventy-four 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 81375736728 cubic inches would be around 361.1 feet tall.
Recreational maths with 81375736728
- 81375736728 backwards is 82763757318
- 81375736728 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81375736728's digits is 57
- More coming soon!
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The information we have on file for 81375736728 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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