21085920
21,085,920 is an even composite number composed of four prime numbers multiplied together.
21085920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 21085920:
25 × 34 × 5 × 1627
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 1627)See below for interesting mathematical facts about the number 21085920 from the Numbermatics database.
Names of 21085920
- Cardinal: 21085920 can be written as Twenty-one million, eighty-five thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.108592 × 107
Factors of 21085920
Divisors of 21085920
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 81 90 96 108 120 135 144 160 162 180 216 240 270 288 324 360 405 432 480 540 648 720 810 864 1080 1296 1440 1620 1627 2160 2592 3240 3254 4320 4881 6480 6508 8135 9762 12960 13016 14643 16270 19524 24405 26032 29286 32540 39048 43929 48810 52064 58572 65080 73215 78096 87858 97620 117144 130160 131787 146430 156192 175716 195240 219645 234288 260320 263574 292860 351432 390480 439290 468576 527148 585720 658935 702864 780960 878580 1054296 1171440 1317870 1405728 1757160 2108592 2342880 2635740 3514320 4217184 5271480 7028640 10542960 21085920
- Sum of all divisors σ(n): 74461464
- Sum of proper divisors (its aliquot sum) s(n): 53375544
- 21085920 is an abundant number, because the sum of its proper divisors (53375544) is greater than itself. Its abundance is 32289624
Bases of 21085920
- Binary: 10100000110111110111000002
- Hexadecimal: 0x141BEE0
- Base-36: CJY00
Squares and roots of 21085920
- 21085920 squared (210859202) is 444616022246400
- 21085920 cubed (210859203) is 9375137875805810688000
-
The
square root of 21085920 is 4591.9407661685 -
The
cube root of 21085920 is 276.2681703545
Scales and comparisons
How big is 21085920?- 21,085,920 seconds is equal to 34 weeks, 6 days, 1 hour, 12 minutes.
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To count from 1 to 21,085,920 would take you about two days!
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 21085920 cubic inches would be around 23 feet tall.
Recreational maths with 21085920
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The information we have on file for 21085920 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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