21145500
21,145,500 is an even composite number composed of five prime numbers multiplied together.
21145500 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21145500:
22 × 32 × 53 × 37 × 127
(2 × 2 × 3 × 3 × 5 × 5 × 5 × 37 × 127)See below for interesting mathematical facts about the number 21145500 from the Numbermatics database.
Names of 21145500
- Cardinal: 21145500 can be written as Twenty-one million, one hundred forty-five thousand, five hundred.
Scientific notation
- Scientific notation: 2.11455 × 107
Factors of 21145500
Divisors of 21145500
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 25 30 36 37 45 50 60 74 75 90 100 111 125 127 148 150 180 185 222 225 250 254 300 333 370 375 381 444 450 500 508 555 635 666 740 750 762 900 925 1110 1125 1143 1270 1332 1500 1524 1665 1850 1905 2220 2250 2286 2540 2775 3175 3330 3700 3810 4500 4572 4625 4699 5550 5715 6350 6660 7620 8325 9250 9398 9525 11100 11430 12700 13875 14097 15875 16650 18500 18796 19050 22860 23495 27750 28194 28575 31750 33300 38100 41625 42291 46990 47625 55500 56388 57150 63500 70485 83250 84582 93980 95250 114300 117475 140970 142875 166500 169164 190500 211455 234950 281940 285750 352425 422910 469900 571500 587375 704850 845820 1057275 1174750 1409700 1762125 2114550 2349500 3524250 4229100 5286375 7048500 10572750 21145500
- Sum of all divisors σ(n): 69049344
- Sum of proper divisors (its aliquot sum) s(n): 47903844
- 21145500 is an abundant number, because the sum of its proper divisors (47903844) is greater than itself. Its abundance is 26758344
Bases of 21145500
- Binary: 10100001010100111100111002
- Hexadecimal: 0x142A79C
- Base-36: CL7Z0
Squares and roots of 21145500
- 21145500 squared (211455002) is 447132170250000
- 21145500 cubed (211455003) is 9454833306021375000000
-
The
square root of 21145500 is 4598.4236429455 -
The
cube root of 21145500 is 276.5281318013
Scales and comparisons
How big is 21145500?- 21,145,500 seconds is equal to 34 weeks, 6 days, 17 hours, 45 minutes.
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To count from 1 to 21,145,500 would take you about three 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 21145500 cubic inches would be around 23 feet tall.
Recreational maths with 21145500
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The information we have on file for 21145500 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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