126721728
126,721,728 is an even composite number composed of five prime numbers multiplied together.
126721728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 126721728:
26 × 32 × 7 × 53 × 593
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7 × 53 × 593)See below for interesting mathematical facts about the number 126721728 from the Numbermatics database.
Names of 126721728
- Cardinal: 126721728 can be written as One hundred twenty-six million, seven hundred twenty-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.26721728 × 108
Factors of 126721728
Divisors of 126721728
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 53 56 63 64 72 84 96 106 112 126 144 159 168 192 212 224 252 288 318 336 371 424 448 477 504 576 593 636 672 742 848 954 1008 1113 1186 1272 1344 1484 1696 1779 1908 2016 2226 2372 2544 2968 3339 3392 3558 3816 4032 4151 4452 4744 5088 5337 5936 6678 7116 7632 8302 8904 9488 10176 10674 11872 12453 13356 14232 15264 16604 17808 18976 21348 23744 24906 26712 28464 30528 31429 33208 35616 37359 37952 42696 49812 53424 56928 62858 66416 71232 74718 85392 94287 99624 106848 113856 125716 132832 149436 170784 188574 199248 213696 220003 251432 265664 282861 298872 341568 377148 398496 440006 502864 565722 597744 660009 754296 796992 880012 1005728 1131444 1195488 1320018 1508592 1760024 1980027 2011456 2262888 2390976 2640036 3017184 3520048 3960054 4525776 5280072 6034368 7040096 7920108 9051552 10560144 14080192 15840216 18103104 21120288 31680432 42240576 63360864 126721728
- Sum of all divisors σ(n): 423659808
- Sum of proper divisors (its aliquot sum) s(n): 296938080
- 126721728 is an abundant number, because the sum of its proper divisors (296938080) is greater than itself. Its abundance is 170216352
Bases of 126721728
- Binary: 1111000110110011110110000002
- Hexadecimal: 0x78D9EC0
- Base-36: 23G340
Squares and roots of 126721728
- 126721728 squared (1267217282) is 16058396347305984
- 126721728 cubed (1267217283) is 2034947734039502437220352
-
The
square root of 126721728 is 11257.0745755725 -
The
cube root of 126721728 is 502.2851773513
Scales and comparisons
How big is 126721728?- 126,721,728 seconds is equal to 4 years, 1 week, 3 days, 16 hours, 28 minutes, 48 seconds.
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To count from 1 to 126,721,728 would take you about six 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 126721728 cubic inches would be around 41.9 feet tall.
Recreational maths with 126721728
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