128978438490
128,978,438,490 is an even composite number composed of eight prime numbers multiplied together.
128978438490 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 128978438490:
2 × 32 × 5 × 11 × 17 × 31 × 233 × 1061
(2 × 3 × 3 × 5 × 11 × 17 × 31 × 233 × 1061)See below for interesting mathematical facts about the number 128978438490 from the Numbermatics database.
Names of 128978438490
- Cardinal: 128978438490 can be written as One hundred twenty-eight billion, nine hundred seventy-eight million, four hundred thirty-eight thousand, four hundred ninety.
Scientific notation
- Scientific notation: 1.2897843849 × 1011
Factors of 128978438490
Divisors of 128978438490
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 5 6 9 10 11 15 17 18 22 30 31 33 34 45 51 55 62 66 85 90 93 99 102 110 153 155 165 170 186 187 198 233 255 279 306 310 330 341 374 465 466 495 510 527 558 561 682 699 765 930 935 990 1023 1054 1061 1122 1165 1395 1398 1530 1581 1683 1705 1870 2046 2097 2122 2330 2563 2635 2790 2805 3069 3162 3183 3366 3410 3495 3961 4194 4743 5115 5126 5270 5305 5610 5797 6138 6366 6990 7223 7689 7905 7922 8415 9486 9549 10230 10485 10610 11594 11671 11883 12815 14446 15345 15378 15810 15915 16830 17391 18037 19098 19805 20970 21669 23067 23342 23715 23766 25630 28985 30690 31830 32891 34782 35013 35649 36074 36115 38445 39610 43338 43571 46134 47430 47745 52173 54111 57970 58355 59415 65007 65782 70026 71298 72230 76890 79453 86955 87142 90185 95490 98673 104346 105039 108222 108345 115335 116710 118830 122791 130014 130713 158906 162333 164455 173910 175065 178245 180370 197346 198407 210078 216690 217855 230670 238359 245582 247213 260865 261426 270555 296019 324666 325035 328910 350130 356490 361801 368373 392139 396814 397265 435710 476718 493365 494426 521730 525195 541110 559147 592038 595221 613955 650070 653565 715077 723602 736746 741639 784278 794530 811665 986730 992035 1050390 1085403 1105119 1118294 1190442 1191795 1227910 1236065 1307130 1350701 1430154 1480095 1483278 1623330 1677441 1785663 1809005 1841865 1960695 1984070 2170806 2210238 2224917 2383590 2472130 2701402 2719343 2795735 2960190 2976105 3256209 3354882 3571326 3575385 3618010 3683730 3708195 3921390 4052103 4202621 4449834 5032323 5427015 5438686 5525595 5591470 5952210 6150617 6512418 6753505 7150770 7416390 7663603 8104206 8158029 8387205 8405242 8928315 10064646 10854030 11051190 11124585 12156309 12301234 12607863 13507010 13596715 15327206 16281045 16316058 16774410 17856630 18451851 20260515 21013105 22249170 22990809 24312618 24474087 25161615 25215726 27193430 30753085 32562090 36903702 37823589 38318015 40521030 40790145 42026210 45981618 46228831 48948174 50323230 55355553 60781545 61506170 63039315 68972427 75647178 76636030 81580290 84299633 92259255 92457662 110711106 114954045 121563090 122370435 126078630 130281251 137944854 138686493 168599266 184518510 189117945 229908090 231144155 244740870 252898899 260562502 276777765 277372986 344862135 378235890 390843753 416059479 421498165 462288310 505797798 553555530 651406255 689724270 693432465 758696697 781687506 832118958 842996330 1172531259 1264494495 1302812510 1386864930 1433093761 1517393394 1954218765 2080297395 2345062518 2528988990 2866187522 3793483485 3908437530 4160594790 4299281283 5862656295 7165468805 7586966970 8598562566 11725312590 12897843849 14330937610 21496406415 25795687698 42992812830 64489219245 128978438490
- Sum of all divisors σ(n): 401938827264
- Sum of proper divisors (its aliquot sum) s(n): 272960388774
- 128978438490 is an abundant number, because the sum of its proper divisors (272960388774) is greater than itself. Its abundance is 143981950284
Bases of 128978438490
- Binary: 11110000001111011011011001001010110102
- Hexadecimal: 0x1E07B6C95A
- Base-36: 1N92FK2I
Squares and roots of 128978438490
- 128978438490 squared (1289784384902) is 16635437595318713480100
- 128978438490 cubed (1289784384903) is 2145612764642048198539011689049000
-
The
square root of 128978438490 is 359135.6825630113 -
The
cube root of 128978438490 is 5052.4928187459
Scales and comparisons
How big is 128978438490?- 128,978,438,490 seconds is equal to 4,101 years, 6 weeks, 1 minute, 30 seconds.
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To count from 1 to 128,978,438,490 would take you about eight thousand, two hundred two 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 128978438490 cubic inches would be around 421 feet tall.
Recreational maths with 128978438490
- 128978438490 backwards is 094834879821
- The number of decimal digits it has is: 12
- The sum of 128978438490's digits is 63
- More coming soon!
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