21225216
21,225,216 is an even composite number composed of four prime numbers multiplied together.
21225216 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 21225216:
28 × 3 × 29 × 953
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 29 × 953)See below for interesting mathematical facts about the number 21225216 from the Numbermatics database.
Names of 21225216
- Cardinal: 21225216 can be written as Twenty-one million, two hundred twenty-five thousand, two hundred sixteen.
Scientific notation
- Scientific notation: 2.1225216 × 107
Factors of 21225216
Divisors of 21225216
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 8 12 16 24 29 32 48 58 64 87 96 116 128 174 192 232 256 348 384 464 696 768 928 953 1392 1856 1906 2784 2859 3712 3812 5568 5718 7424 7624 11136 11436 15248 22272 22872 27637 30496 45744 55274 60992 82911 91488 110548 121984 165822 182976 221096 243968 331644 365952 442192 663288 731904 884384 1326576 1768768 2653152 3537536 5306304 7075072 10612608 21225216
- Sum of all divisors σ(n): 58499280
- Sum of proper divisors (its aliquot sum) s(n): 37274064
- 21225216 is an abundant number, because the sum of its proper divisors (37274064) is greater than itself. Its abundance is 16048848
Bases of 21225216
- Binary: 10100001111011111000000002
- Hexadecimal: 0x143DF00
- Base-36: CMXHC
Squares and roots of 21225216
- 21225216 squared (212252162) is 450509794246656
- 21225216 cubed (212252163) is 9562167693000830877696
-
The
square root of 21225216 is 4607.0832421393 -
The
cube root of 21225216 is 276.8751886803
Scales and comparisons
How big is 21225216?- 21,225,216 seconds is equal to 35 weeks, 15 hours, 53 minutes, 36 seconds.
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To count from 1 to 21,225,216 would take you about four 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 21225216 cubic inches would be around 23.1 feet tall.
Recreational maths with 21225216
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The information we have on file for 21225216 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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