385420728
385,420,728 is an even composite number composed of six prime numbers multiplied together.
385420728 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 385420728:
23 × 3 × 7 × 11 × 73 × 2857
(2 × 2 × 2 × 3 × 7 × 11 × 73 × 2857)See below for interesting mathematical facts about the number 385420728 from the Numbermatics database.
Names of 385420728
- Cardinal: 385420728 can be written as Three hundred eighty-five million, four hundred twenty thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 3.85420728 × 108
Factors of 385420728
Divisors of 385420728
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 7 8 11 12 14 21 22 24 28 33 42 44 56 66 73 77 84 88 132 146 154 168 219 231 264 292 308 438 462 511 584 616 803 876 924 1022 1533 1606 1752 1848 2044 2409 2857 3066 3212 4088 4818 5621 5714 6132 6424 8571 9636 11242 11428 12264 16863 17142 19272 19999 22484 22856 31427 33726 34284 39998 44968 59997 62854 67452 68568 79996 94281 119994 125708 134904 159992 188562 208561 219989 239988 251416 377124 417122 439978 479976 625683 659967 754248 834244 879956 1251366 1319934 1459927 1668488 1759912 2294171 2502732 2639868 2919854 4379781 4588342 5005464 5279736 5839708 6882513 8759562 9176684 11679416 13765026 16059197 17519124 18353368 27530052 32118394 35038248 48177591 55060104 64236788 96355182 128473576 192710364 385420728
- Sum of all divisors σ(n): 1218193920
- Sum of proper divisors (its aliquot sum) s(n): 832773192
- 385420728 is an abundant number, because the sum of its proper divisors (832773192) is greater than itself. Its abundance is 447352464
Bases of 385420728
- Binary: 101101111100100001101101110002
- Hexadecimal: 0x16F90DB8
- Base-36: 6DGWJC
Squares and roots of 385420728
- 385420728 squared (3854207282) is 148549137572049984
- 385420728 cubed (3854207283) is 57253916746791657285668352
-
The
square root of 385420728 is 19632.1350851099 -
The
cube root of 385420728 is 727.7435346259
Scales and comparisons
How big is 385420728?- 385,420,728 seconds is equal to 12 years, 13 weeks, 1 day, 21 hours, 18 minutes, 48 seconds.
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To count from 1 to 385,420,728 would take you about eighteen 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 385420728 cubic inches would be around 60.6 feet tall.
Recreational maths with 385420728
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The information we have on file for 385420728 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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