81376730988
81,376,730,988 is an even composite number composed of six prime numbers multiplied together.
81376730988 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty-four divisors.
Prime factorization of 81376730988:
22 × 3 × 72 × 292 × 432 × 89
(2 × 2 × 3 × 7 × 7 × 29 × 29 × 43 × 43 × 89)See below for interesting mathematical facts about the number 81376730988 from the Numbermatics database.
Names of 81376730988
- Cardinal: 81376730988 can be written as Eighty-one billion, three hundred seventy-six million, seven hundred thirty thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 8.1376730988 × 1010
Factors of 81376730988
Divisors of 81376730988
- Number of divisors d(n): 324
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Complete list of divisors:
1 2 3 4 6 7 12 14 21 28 29 42 43 49 58 84 86 87 89 98 116 129 147 172 174 178 196 203 258 267 294 301 348 356 406 516 534 588 602 609 623 812 841 903 1068 1204 1218 1246 1247 1421 1682 1806 1849 1869 2107 2436 2492 2494 2523 2581 2842 3364 3612 3698 3738 3741 3827 4214 4263 4361 4988 5046 5162 5547 5684 5887 6321 7396 7476 7482 7654 7743 8428 8526 8722 8729 10092 10324 11094 11481 11774 12642 12943 13083 14964 15308 15486 17052 17444 17458 17661 18067 22188 22962 23548 25284 25886 26166 26187 26789 30972 34916 35322 36134 36163 38829 41209 45924 51772 52332 52374 53578 53621 54201 61103 70644 72268 72326 74849 77658 80367 82418 90601 104748 107156 107242 108402 108489 110983 122206 123627 126469 144652 149698 155316 160734 160863 164561 164836 181202 183309 187523 214484 216804 216978 221966 224547 244412 247254 252938 253141 271803 299396 321468 321726 329122 332949 362404 366618 375046 375347 379407 433956 443932 449094 493683 494508 505876 506282 523943 543606 562569 643452 658244 665898 733236 750092 750694 758814 759423 776881 898188 987366 1012564 1047886 1087212 1125138 1126041 1151927 1331796 1501388 1517628 1518846 1553762 1555009 1571829 1771987 1974732 2095772 2250276 2252082 2303854 2330643 2627429 3037692 3107524 3110018 3143658 3218507 3455781 3543974 3667601 4504164 4607708 4661286 4665027 4772269 5254858 5315961 5438167 6220036 6287316 6437014 6911562 7087948 7335202 7882287 8063489 9322572 9330054 9544538 9655521 10509716 10631922 10876334 10885063 11002803 12874028 13823124 14316807 14670404 15764574 16126978 16314501 18660108 19089076 19311042 21263844 21752668 21770126 22005606 22529549 24190467 28633614 31529148 32253956 32629002 32655189 33405883 38622084 43540252 44011212 45059098 48380934 57267228 65258004 65310378 66811766 67588647 76195441 90118196 96761868 100217649 130620756 133623532 135177294 138395801 152390882 157706843 200435298 228586323 233841181 270354588 276791602 304781764 315413686 400870596 415187403 457172646 467682362 473120529 553583204 630827372 701523543 830374806 914345292 935364724 946241058 968770607 1403047086 1660749612 1892482116 1937541214 2806094172 2906311821 3875082428 5812623642 6781394249 11625247284 13562788498 20344182747 27125576996 40688365494 81376730988
- Sum of all divisors σ(n): 236834062920
- Sum of proper divisors (its aliquot sum) s(n): 155457331932
- 81376730988 is an abundant number, because the sum of its proper divisors (155457331932) is greater than itself. Its abundance is 74080600944
Bases of 81376730988
- Binary: 10010111100100110111001011111011011002
- Hexadecimal: 0x12F26E5F6C
- Base-36: 11DTLRHO
Squares and roots of 81376730988
- 81376730988 squared (813767309882) is 6622172346293319456144
- 81376730988 cubed (813767309883) is 538890737580484236324176751790272
-
The
square root of 81376730988 is 285266.0705166319 -
The
cube root of 81376730988 is 4333.4462407635
Scales and comparisons
How big is 81376730988?- 81,376,730,988 seconds is equal to 2,587 years, 27 weeks, 3 days, 7 hours, 29 minutes, 48 seconds.
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To count from 1 to 81,376,730,988 would take you about five thousand, one hundred seventy-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 81376730988 cubic inches would be around 361.1 feet tall.
Recreational maths with 81376730988
- 81376730988 backwards is 88903767318
- The number of decimal digits it has is: 11
- The sum of 81376730988's digits is 60
- More coming soon!
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