6438988668
6,438,988,668 is an even composite number composed of five prime numbers multiplied together.
6438988668 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 6438988668:
22 × 3 × 72 × 293 × 449
(2 × 2 × 3 × 7 × 7 × 29 × 29 × 29 × 449)See below for interesting mathematical facts about the number 6438988668 from the Numbermatics database.
Names of 6438988668
- Cardinal: 6438988668 can be written as Six billion, four hundred thirty-eight million, nine hundred eighty-eight thousand, six hundred sixty-eight.
Scientific notation
- Scientific notation: 6.438988668 × 109
Factors of 6438988668
Divisors of 6438988668
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 7 12 14 21 28 29 42 49 58 84 87 98 116 147 174 196 203 294 348 406 449 588 609 812 841 898 1218 1347 1421 1682 1796 2436 2523 2694 2842 3143 3364 4263 5046 5388 5684 5887 6286 8526 9429 10092 11774 12572 13021 17052 17661 18858 22001 23548 24389 26042 35322 37716 39063 41209 44002 48778 52084 66003 70644 73167 78126 82418 88004 91147 97556 123627 132006 146334 156252 164836 170723 182294 247254 264012 273441 292668 341446 364588 377609 494508 512169 546882 638029 682892 755218 1024338 1093764 1132827 1195061 1276058 1510436 1914087 2048676 2265654 2390122 2552116 2643263 3585183 3828174 4531308 4780244 5286526 7170366 7656348 7929789 10573052 10950661 14340732 15859578 18502841 21901322 31719156 32851983 37005682 43802644 55508523 65703966 74011364 76654627 111017046 131407932 153309254 222034092 229963881 306618508 459927762 536582389 919855524 1073164778 1609747167 2146329556 3219494334 6438988668
- Sum of all divisors σ(n): 18141732000
- Sum of proper divisors (its aliquot sum) s(n): 11702743332
- 6438988668 is an abundant number, because the sum of its proper divisors (11702743332) is greater than itself. Its abundance is 5263754664
Bases of 6438988668
- Binary: 1011111111100101100101011011111002
- Hexadecimal: 0x17FCB2B7C
- Base-36: 2YHLVGC
Squares and roots of 6438988668
- 6438988668 squared (64389886682) is 41460575066632414224
- 6438988668 cubed (64389886683) is 266964173022809460109818013632
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The
square root of 6438988668 is 80243.3091790213 -
The
cube root of 6438988668 is 1860.3980983935
Scales and comparisons
How big is 6438988668?- 6,438,988,668 seconds is equal to 204 years, 38 weeks, 3 days, 7 hours, 57 minutes, 48 seconds.
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To count from 1 to 6,438,988,668 would take you about four hundred nine 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 6438988668 cubic inches would be around 155 feet tall.
Recreational maths with 6438988668
- 6438988668 backwards is 8668898346
- The number of decimal digits it has is: 10
- The sum of 6438988668's digits is 66
- More coming soon!
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