21438398464
21,438,398,464 is an even composite number composed of three prime numbers multiplied together.
21438398464 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of one hundred fourteen divisors.
Prime factorization of 21438398464:
218 × 72 × 1669
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 1669)See below for interesting mathematical facts about the number 21438398464 from the Numbermatics database.
Names of 21438398464
- Cardinal: 21438398464 can be written as Twenty-one billion, four hundred thirty-eight million, three hundred ninety-eight thousand, four hundred sixty-four.
Scientific notation
- Scientific notation: 2.1438398464 × 1010
Factors of 21438398464
Divisors of 21438398464
- Number of divisors d(n): 114
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Complete list of divisors:
1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 392 448 512 784 896 1024 1568 1669 1792 2048 3136 3338 3584 4096 6272 6676 7168 8192 11683 12544 13352 14336 16384 23366 25088 26704 28672 32768 46732 50176 53408 57344 65536 81781 93464 100352 106816 114688 131072 163562 186928 200704 213632 229376 262144 327124 373856 401408 427264 458752 654248 747712 802816 854528 917504 1308496 1495424 1605632 1709056 1835008 2616992 2990848 3211264 3418112 5233984 5981696 6422528 6836224 10467968 11963392 12845056 13672448 20935936 23926784 27344896 41871872 47853568 54689792 83743744 95707136 109379584 167487488 191414272 218759168 334974976 382828544 437518336 669949952 765657088 1339899904 1531314176 2679799808 3062628352 5359599616 10719199232 21438398464
- Sum of all divisors σ(n): 49906879530
- Sum of proper divisors (its aliquot sum) s(n): 28468481066
- 21438398464 is an abundant number, because the sum of its proper divisors (28468481066) is greater than itself. Its abundance is 7030082602
Bases of 21438398464
- Binary: 100111111011101010000000000000000002
- Hexadecimal: 0x4FDD40000
- Base-36: 9UJVA4G
Squares and roots of 21438398464
- 21438398464 squared (214383984642) is 459604928701237559296
- 21438398464 cubed (214383984643) is 9853193597515440806110475321344
-
The
square root of 21438398464 is 146418.5728109655 -
The
cube root of 21438398464 is 2777.9906491831
Scales and comparisons
How big is 21438398464?- 21,438,398,464 seconds is equal to 681 years, 35 weeks, 14 hours, 41 minutes, 4 seconds.
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To count from 1 to 21,438,398,464 would take you about one thousand, three hundred sixty-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 21438398464 cubic inches would be around 231.5 feet tall.
Recreational maths with 21438398464
- 21438398464 backwards is 46489383412
- The number of decimal digits it has is: 11
- The sum of 21438398464's digits is 52
- More coming soon!
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Keywords: Divisors of 21438398464, math, Factors of 21438398464, curriculum, school, college, exams, university, Prime factorization of 21438398464, STEM, science, technology, engineering, physics, economics, calculator, twenty-one billion, four hundred thirty-eight million, three hundred ninety-eight thousand, four hundred sixty-four.