81298429380

Names of 81298429380

• Cardinal: 81298429380 can be written as Eighty-one billion, two hundred ninety-eight million, four hundred twenty-nine thousand, three hundred eighty.

Scientific notation

• Scientific notation: 8.129842938 × 10¹⁰

Factors of 81298429380

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 14207

Divisors of 81298429380

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 31 35 36 42 45 49 54 60 62 63 70 84 90 93 98 105 108 124 126 135 140 147 155 180 186 189 196 210 217 245 252 270 279 294 310 315 343 372 378 420 434 441 465 490 540 558 588 620 630 651 686 735 756 837 868 882 930 945 980 1029 1085 1116 1260 1302 1323 1372 1395 1470 1519 1674 1715 1764 1860 1890 1953 2058 2170 2205 2604 2646 2790 2940 3038 3087 3255 3348 3430 3780 3906 4116 4185 4340 4410 4557 5145 5292 5580 5859 6076 6174 6510 6615 6860 7595 7812 8370 8820 9114 9261 9765 10290 10633 11718 12348 13020 13230 13671 14159 15190 15435 16740 18228 18522 19530 20580 21266 22785 23436 26460 27342 28318 29295 30380 30870 31899 37044 39060 41013 42477 42532 45570 46305 53165 54684 56636 58590 61740 63798 68355 70795 82026 84954 91140 92610 95697 99113 106330 117180 127431 127596 136710 141590 159495 164052 169908 185220 191394 198226 205065 212385 212660 254862 273420 283180 287091 297339 318990 382293 382788 396452 410130 424770 438929 478485 495565 509724 574182 594678 637155 637980 693791 764586 820260 849540 877858 892017 956970 991130 1148364 1189356 1274310 1316787 1387582 1435455 1486695 1529172 1755716 1784034 1911465 1913940 1982260 2081373 2194645 2548620 2633574 2676051 2775164 2870910 2973390 3072503 3468955 3568068 3822930 3950361 4162746 4389290 4460085 4856537 5267148 5352102 5741820 5946780 6145006 6244119 6583935 6937910 7645860 7900722 8325492 8778580 8920170 9217509 9713074 10406865 10704204 11851083 12290012 12488238 13167870 13380255 13875820 14569611 15362515 15801444 17840340 18435018 18732357 19426148 19751805 20813730 21507521 23702166 24282685 24976476 26335740 26760510 27652527 29139222 30725030 31220595 36870036 37464714 39503610 41627460 43015042 43708833 46087545 47404332 48565370 53521020 55305054 58278444 59255415 61450060 62441190 64522563 72848055 74929428 79007220 82957581 86030084 87417666 92175090 93661785 97130740 107537605 110610108 118510830 124882380 129045126 131126499 138262635 145696110 150552647 165915162 174835332 184350180 187323570 193567689 215075210 218544165 237021660 258090252 262252998 276525270 291392220 301105294 322612815 331830324 374647140 387135378 414787905 430150420 437088330 451657941 524505996 553050540 580703067 602210588 645225630 655632495 752763235 774270756 829575810 874176660 903315882 967838445 1161406134 1290451260 1311264990 1354973823 1505526470 1659151620 1806631764 1935676890 2258289705 2322812268 2622529980 2709947646 2903515335 3011052940 3871353780 4064921469 4516579410 5419895292 5807030670 6774869115 8129842938 9033158820 11614061340 13549738230 16259685876 20324607345 27099476460 40649214690 81298429380
• Sum of all divisors σ(n): 304496640000
• Sum of proper divisors (its aliquot sum) s(n): 223198210620
• 81298429380 is an abundant number, because the sum of its proper divisors (223198210620) is greater than itself. Its abundance is 141899781240

Bases of 81298429380

• Binary: 1001011101101110000111001010111000100₂
• Hexadecimal: 0x12EDC395C4
• Base-36: 11CIZHL0

Squares and roots of 81298429380

• 81298429380 squared (81298429380²) is 6609434619654847184400
• 81298429380 cubed (81298429380³) is 537336653667736753795635237672000
• The square root of 81298429380 is 285128.7943719469
• The cube root of 81298429380 is 4332.0558977909

Scales and comparisons

• 81,298,429,380 seconds is equal to 2,585 years, 2 weeks, 1 hour, 3 minutes.
• To count from 1 to 81,298,429,380 would take you about five thousand, one hundred seventy 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 81298429380 cubic inches would be around 361 feet tall.

Recreational maths with 81298429380

• 81298429380 backwards is 08392489218
• 81298429380 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81298429380's digits is 54
• More coming soon!