21278172672
21,278,172,672 is an even composite number composed of five prime numbers multiplied together.
21278172672 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 21278172672:
29 × 32 × 17 × 149 × 1823
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 17 × 149 × 1823)See below for interesting mathematical facts about the number 21278172672 from the Numbermatics database.
Names of 21278172672
- Cardinal: 21278172672 can be written as Twenty-one billion, two hundred seventy-eight million, one hundred seventy-two thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 2.1278172672 × 1010
Factors of 21278172672
Divisors of 21278172672
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 17 18 24 32 34 36 48 51 64 68 72 96 102 128 136 144 149 153 192 204 256 272 288 298 306 384 408 447 512 544 576 596 612 768 816 894 1088 1152 1192 1224 1341 1536 1632 1788 1823 2176 2304 2384 2448 2533 2682 3264 3576 3646 4352 4608 4768 4896 5066 5364 5469 6528 7152 7292 7599 8704 9536 9792 10132 10728 10938 13056 14304 14584 15198 16407 19072 19584 20264 21456 21876 22797 26112 28608 29168 30396 30991 32814 38144 39168 40528 42912 43752 45594 57216 58336 60792 61982 65628 76288 78336 81056 85824 87504 91188 92973 114432 116672 121584 123964 131256 162112 171648 175008 182376 185946 228864 233344 243168 247928 262512 271627 278919 324224 343296 350016 364752 371892 466688 486336 495856 525024 543254 557838 648448 686592 700032 729504 743784 814881 933376 972672 991712 1050048 1086508 1115676 1296896 1400064 1459008 1487568 1629762 1945344 1983424 2100096 2173016 2231352 2444643 2800128 2918016 2975136 3259524 3890688 3966848 4200192 4346032 4462704 4617659 4889286 5836032 5950272 6519048 7933696 8400384 8692064 8925408 9235318 9778572 11672064 11900544 13038096 13852977 15867392 17384128 17850816 18470636 19557144 23801088 26076192 27705954 34768256 35701632 36941272 39114288 41558931 47602176 52152384 55411908 69536512 71403264 73882544 78228576 83117862 104304768 110823816 139073024 142806528 147765088 156457152 166235724 208609536 221647632 295530176 312914304 332471448 417219072 443295264 591060352 625828608 664942896 886590528 1182120704 1251657216 1329885792 1773181056 2364241408 2659771584 3546362112 5319543168 7092724224 10639086336 21278172672
- Sum of all divisors σ(n): 65494915200
- Sum of proper divisors (its aliquot sum) s(n): 44216742528
- 21278172672 is an abundant number, because the sum of its proper divisors (44216742528) is greater than itself. Its abundance is 22938569856
Bases of 21278172672
- Binary: 100111101000100011100100110000000002
- Hexadecimal: 0x4F4472600
- Base-36: 9RWH340
Squares and roots of 21278172672
- 21278172672 squared (212781726722) is 452760632259447619584
- 21278172672 cubed (212781726723) is 9633918912300419952847720808448
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The
square root of 21278172672 is 145870.3968322565 -
The
cube root of 21278172672 is 2771.0526425421
Scales and comparisons
How big is 21278172672?- 21,278,172,672 seconds is equal to 676 years, 30 weeks, 1 day, 3 hours, 31 minutes, 12 seconds.
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To count from 1 to 21,278,172,672 would take you about one thousand, three hundred fifty-three 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 21278172672 cubic inches would be around 230.9 feet tall.
Recreational maths with 21278172672
- 21278172672 backwards is 27627187212
- The number of decimal digits it has is: 11
- The sum of 21278172672's digits is 45
- More coming soon!
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