21042400
21,042,400 is an even composite number composed of four prime numbers multiplied together.
What does the number 21042400 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.
21042400 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 21042400:
25 × 52 × 29 × 907
(2 × 2 × 2 × 2 × 2 × 5 × 5 × 29 × 907)See below for interesting mathematical facts about the number 21042400 from the Numbermatics database.
Names of 21042400
- Cardinal: 21042400 can be written as Twenty-one million, forty-two thousand, four hundred.
Scientific notation
- Scientific notation: 2.10424 × 107
Factors of 21042400
Divisors of 21042400
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 8 10 16 20 25 29 32 40 50 58 80 100 116 145 160 200 232 290 400 464 580 725 800 907 928 1160 1450 1814 2320 2900 3628 4535 4640 5800 7256 9070 11600 14512 18140 22675 23200 26303 29024 36280 45350 52606 72560 90700 105212 131515 145120 181400 210424 263030 362800 420848 526060 657575 725600 841696 1052120 1315150 2104240 2630300 4208480 5260600 10521200 21042400
- Sum of all divisors σ(n): 53199720
- Sum of proper divisors (its aliquot sum) s(n): 32157320
- 21042400 is an abundant number, because the sum of its proper divisors (32157320) is greater than itself. Its abundance is 11114920
Bases of 21042400
- Binary: 10100000100010100111000002
- Hexadecimal: 0x14114E0
- Base-36: CJ0F4
Squares and roots of 21042400
- 21042400 squared (210424002) is 442782597760000
- 21042400 cubed (210424003) is 9317208535105024000000
-
The
square root of 21042400 is 4587.1995814437 -
The
cube root of 21042400 is 276.0779727889
Scales and comparisons
How big is 21042400?- 21,042,400 seconds is equal to 34 weeks, 5 days, 13 hours, 6 minutes, 40 seconds.
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To count from 1 to 21,042,400 would take you about seven hours!
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 21042400 cubic inches would be around 23 feet tall.
Recreational maths with 21042400
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The information we have on file for 21042400 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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