21920000
21,920,000 is an even composite number composed of three prime numbers multiplied together.
21920000 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 21920000:
28 × 54 × 137
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 137)See below for interesting mathematical facts about the number 21920000 from the Numbermatics database.
Names of 21920000
- Cardinal: 21920000 can be written as Twenty-one million, nine hundred twenty thousand.
Scientific notation
- Scientific notation: 2.192 × 107
Factors of 21920000
Divisors of 21920000
- Number of divisors d(n): 90
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Complete list of divisors:
1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 137 160 200 250 256 274 320 400 500 548 625 640 685 800 1000 1096 1250 1280 1370 1600 2000 2192 2500 2740 3200 3425 4000 4384 5000 5480 6400 6850 8000 8768 10000 10960 13700 16000 17125 17536 20000 21920 27400 32000 34250 35072 40000 43840 54800 68500 80000 85625 87680 109600 137000 160000 171250 175360 219200 274000 342500 438400 548000 685000 876800 1096000 1370000 2192000 2740000 4384000 5480000 10960000 21920000
- Sum of all divisors σ(n): 55074558
- Sum of proper divisors (its aliquot sum) s(n): 33154558
- 21920000 is an abundant number, because the sum of its proper divisors (33154558) is greater than itself. Its abundance is 11234558
Bases of 21920000
- Binary: 10100111001111001000000002
- Hexadecimal: 0x14E7900
- Base-36: D1TKW
Squares and roots of 21920000
- 21920000 squared (219200002) is 480486400000000
- 21920000 cubed (219200003) is 10532261888000000000000
-
The
square root of 21920000 is 4681.8799642879 -
The
cube root of 21920000 is 279.8638794147
Scales and comparisons
How big is 21920000?- 21,920,000 seconds is equal to 36 weeks, 1 day, 16 hours, 53 minutes, 20 seconds.
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To count from 1 to 21,920,000 would take you about two 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 21920000 cubic inches would be around 23.3 feet tall.
Recreational maths with 21920000
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