420505987990
420,505,987,990 is an even composite number composed of seven prime numbers multiplied together.
420505987990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 420505987990:
2 × 5 × 11 × 31 × 257 × 439 × 1093
See below for interesting mathematical facts about the number 420505987990 from the Numbermatics database.
Names of 420505987990
- Cardinal: 420505987990 can be written as Four hundred twenty billion, five hundred five million, nine hundred eighty-seven thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 4.2050598799 × 1011
Factors of 420505987990
Divisors of 420505987990
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 5 10 11 22 31 55 62 110 155 257 310 341 439 514 682 878 1093 1285 1705 2186 2195 2570 2827 3410 4390 4829 5465 5654 7967 9658 10930 12023 13609 14135 15934 24046 24145 27218 28270 33883 39835 48290 60115 67766 68045 79670 87637 112823 120230 136090 149699 169415 175274 225646 280901 299398 338830 372713 438185 479827 561802 564115 745426 748495 876370 959654 1128230 1241053 1404505 1496990 1863565 2399135 2482106 2809010 3089911 3497513 3727130 4798270 5278097 6179822 6205265 6995026 8707931 10556194 12410530 14874637 15449555 17415862 17487565 26390485 29749274 30899110 34975130 38472643 43539655 52780970 74373185 76945286 87079310 95787241 123315539 148746370 163621007 191574482 192363215 246631078 327242014 384726430 478936205 616577695 818105035 957872410 1233155390 1356470929 1636210070 2712941858 3822781709 6782354645 7645563418 13564709290 19113908545 38227817090 42050598799 84101197598 210252993995 420505987990
- Sum of all divisors σ(n): 858407362560
- Sum of proper divisors (its aliquot sum) s(n): 437901374570
- 420505987990 is an abundant number, because the sum of its proper divisors (437901374570) is greater than itself. Its abundance is 17395386580
Bases of 420505987990
- Binary: 1100001111010000001110000101011100101102
- Hexadecimal: 0x61E81C2B96
- Base-36: 5D6EEOWM
Squares and roots of 420505987990
- 420505987990 squared (4205059879902) is 176825285935446024240100
- 420505987990 cubed (4205059879903) is 74356091563898981784400739476399000
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The
square root of 420505987990 is 648464.3305456361 -
The
cube root of 420505987990 is 7491.8785450073
Scales and comparisons
How big is 420505987990?- 420,505,987,990 seconds is equal to 13,370 years, 41 weeks, 10 hours, 53 minutes, 10 seconds.
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To count from 1 to 420,505,987,990 would take you about twenty-six thousand, seven hundred forty-one 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 420505987990 cubic inches would be around 624.3 feet tall.
Recreational maths with 420505987990
- 420505987990 backwards is 099789505024
- The number of decimal digits it has is: 12
- The sum of 420505987990's digits is 58
- More coming soon!
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