21338742720
21,338,742,720 is an even composite number composed of five prime numbers multiplied together.
21338742720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 21338742720:
26 × 3 × 5 × 172 × 76913
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 17 × 76913)See below for interesting mathematical facts about the number 21338742720 from the Numbermatics database.
Names of 21338742720
- Cardinal: 21338742720 can be written as Twenty-one billion, three hundred thirty-eight million, seven hundred forty-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.133874272 × 1010
Factors of 21338742720
Divisors of 21338742720
- Number of divisors d(n): 168
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 136 160 170 192 204 240 255 272 289 320 340 408 480 510 544 578 680 816 867 960 1020 1088 1156 1360 1445 1632 1734 2040 2312 2720 2890 3264 3468 4080 4335 4624 5440 5780 6936 8160 8670 9248 11560 13872 16320 17340 18496 23120 27744 34680 46240 55488 69360 76913 92480 138720 153826 230739 277440 307652 384565 461478 615304 769130 922956 1153695 1230608 1307521 1538260 1845912 2307390 2461216 2615042 3076520 3691824 3922563 4614780 4922432 5230084 6153040 6537605 7383648 7845126 9229560 10460168 12306080 13075210 14767296 15690252 18459120 19612815 20920336 22227857 24612160 26150420 31380504 36918240 39225630 41840672 44455714 52300840 62761008 66683571 73836480 78451260 83681344 88911428 104601680 111139285 125522016 133367142 156902520 177822856 209203360 222278570 251044032 266734284 313805040 333417855 355645712 418406720 444557140 533468568 627610080 666835710 711291424 889114280 1066937136 1255220160 1333671420 1422582848 1778228560 2133874272 2667342840 3556457120 4267748544 5334685680 7112914240 10669371360 21338742720
- Sum of all divisors σ(n): 71971198704
- Sum of proper divisors (its aliquot sum) s(n): 50632455984
- 21338742720 is an abundant number, because the sum of its proper divisors (50632455984) is greater than itself. Its abundance is 29293713264
Bases of 21338742720
- Binary: 100111101111110001101011111110000002
- Hexadecimal: 0x4F7E35FC0
- Base-36: 9SWJB9C
Squares and roots of 21338742720
- 21338742720 squared (213387427202) is 455341940870352998400
- 21338742720 cubed (213387427203) is 9716424525857915508438171648000
-
The
square root of 21338742720 is 146077.8652637011 -
The
cube root of 21338742720 is 2773.6794937941
Scales and comparisons
How big is 21338742720?- 21,338,742,720 seconds is equal to 678 years, 26 weeks, 2 days, 4 hours, 32 minutes.
-
To count from 1 to 21,338,742,720 would take you about one thousand, three hundred fifty-seven 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 21338742720 cubic inches would be around 231.1 feet tall.
Recreational maths with 21338742720
- 21338742720 backwards is 02724783312
- The number of decimal digits it has is: 11
- The sum of 21338742720's digits is 39
- More coming soon!
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