28640640
28,640,640 is an even composite number composed of five prime numbers multiplied together.
28640640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 28640640:
27 × 3 × 5 × 7 × 2131
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 2131)See below for interesting mathematical facts about the number 28640640 from the Numbermatics database.
Names of 28640640
- Cardinal: 28640640 can be written as Twenty-eight million, six hundred forty thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.864064 × 107
Factors of 28640640
Divisors of 28640640
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 128 140 160 168 192 210 224 240 280 320 336 384 420 448 480 560 640 672 840 896 960 1120 1344 1680 1920 2131 2240 2688 3360 4262 4480 6393 6720 8524 10655 12786 13440 14917 17048 21310 25572 29834 31965 34096 42620 44751 51144 59668 63930 68192 74585 85240 89502 102288 119336 127860 136384 149170 170480 179004 204576 223755 238672 255720 272768 298340 340960 358008 409152 447510 477344 511440 596680 681920 716016 818304 895020 954688 1022880 1193360 1363840 1432032 1790040 1909376 2045760 2386720 2864064 3580080 4091520 4773440 5728128 7160160 9546880 14320320 28640640
- Sum of all divisors σ(n): 104382720
- Sum of proper divisors (its aliquot sum) s(n): 75742080
- 28640640 is an abundant number, because the sum of its proper divisors (75742080) is greater than itself. Its abundance is 47101440
Bases of 28640640
- Binary: 11011010100000101100000002
- Hexadecimal: 0x1B50580
- Base-36: H1V9C
Squares and roots of 28640640
- 28640640 squared (286406402) is 820286259609600
- 28640640 cubed (286406403) is 23493523458425094144000
-
The
square root of 28640640 is 5351.6950585773 -
The
cube root of 28640640 is 305.9573608835
Scales and comparisons
How big is 28640640?- 28,640,640 seconds is equal to 47 weeks, 2 days, 11 hours, 44 minutes.
-
To count from 1 to 28,640,640 would take you about nineteen weeks!
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 28640640 cubic inches would be around 25.5 feet tall.
Recreational maths with 28640640
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The information we have on file for 28640640 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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