28513440
28,513,440 is an even composite number composed of four prime numbers multiplied together.
28513440 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 28513440:
25 × 32 × 5 × 19801
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 19801)See below for interesting mathematical facts about the number 28513440 from the Numbermatics database.
Names of 28513440
- Cardinal: 28513440 can be written as Twenty-eight million, five hundred thirteen thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.851344 × 107
Factors of 28513440
Divisors of 28513440
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 240 288 360 480 720 1440 19801 39602 59403 79204 99005 118806 158408 178209 198010 237612 297015 316816 356418 396020 475224 594030 633632 712836 792040 891045 950448 1188060 1425672 1584080 1782090 1900896 2376120 2851344 3168160 3564180 4752240 5702688 7128360 9504480 14256720 28513440
- Sum of all divisors σ(n): 97307028
- Sum of proper divisors (its aliquot sum) s(n): 68793588
- 28513440 is an abundant number, because the sum of its proper divisors (68793588) is greater than itself. Its abundance is 40280148
Bases of 28513440
- Binary: 11011001100010100101000002
- Hexadecimal: 0x1B314A0
- Base-36: GZ540
Squares and roots of 28513440
- 28513440 squared (285134402) is 813016260633600
- 28513440 cubed (285134403) is 23181890366600515584000
-
The
square root of 28513440 is 5339.7977489789 -
The
cube root of 28513440 is 305.5037451671
Scales and comparisons
How big is 28513440?- 28,513,440 seconds is equal to 47 weeks, 1 day, 24 minutes.
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To count from 1 to 28,513,440 would take you about eighteen 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 28513440 cubic inches would be around 25.5 feet tall.
Recreational maths with 28513440
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The information we have on file for 28513440 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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