21397790720
21,397,790,720 is an even composite number composed of four prime numbers multiplied together.
21397790720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21397790720:
213 × 5 × 43 × 12149
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 43 × 12149)See below for interesting mathematical facts about the number 21397790720 from the Numbermatics database.
Names of 21397790720
- Cardinal: 21397790720 can be written as Twenty-one billion, three hundred ninety-seven million, seven hundred ninety thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.139779072 × 1010
Factors of 21397790720
Divisors of 21397790720
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 43 64 80 86 128 160 172 215 256 320 344 430 512 640 688 860 1024 1280 1376 1720 2048 2560 2752 3440 4096 5120 5504 6880 8192 10240 11008 12149 13760 20480 22016 24298 27520 40960 44032 48596 55040 60745 88064 97192 110080 121490 176128 194384 220160 242980 352256 388768 440320 485960 522407 777536 880640 971920 1044814 1555072 1761280 1943840 2089628 2612035 3110144 3887680 4179256 5224070 6220288 7775360 8358512 10448140 12440576 15550720 16717024 20896280 24881152 31101440 33434048 41792560 49762304 62202880 66868096 83585120 99524608 124405760 133736192 167170240 248811520 267472384 334340480 497623040 534944768 668680960 1069889536 1337361920 2139779072 2674723840 4279558144 5349447680 10698895360 21397790720
- Sum of all divisors σ(n): 52550110800
- Sum of proper divisors (its aliquot sum) s(n): 31152320080
- 21397790720 is an abundant number, because the sum of its proper divisors (31152320080) is greater than itself. Its abundance is 9754529360
Bases of 21397790720
- Binary: 100111110110110100001100000000000002
- Hexadecimal: 0x4FB686000
- Base-36: 9TVOWZK
Squares and roots of 21397790720
- 21397790720 squared (213977907202) is 457865447696918118400
- 21397790720 cubed (213977907203) is 9797309027737759886499381248000
-
The
square root of 21397790720 is 146279.8370247927 -
The
cube root of 21397790720 is 2776.2355548717
Scales and comparisons
How big is 21397790720?- 21,397,790,720 seconds is equal to 680 years, 19 weeks, 6 days, 14 hours, 45 minutes, 20 seconds.
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To count from 1 to 21,397,790,720 would take you about one thousand, three hundred sixty years!
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 21397790720 cubic inches would be around 231.4 feet tall.
Recreational maths with 21397790720
- 21397790720 backwards is 02709779312
- The number of decimal digits it has is: 11
- The sum of 21397790720's digits is 47
- More coming soon!
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