21389215680
21,389,215,680 is an even composite number composed of six prime numbers multiplied together.
21389215680 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 21389215680:
26 × 32 × 5 × 7 × 61 × 17393
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 61 × 17393)See below for interesting mathematical facts about the number 21389215680 from the Numbermatics database.
Names of 21389215680
- Cardinal: 21389215680 can be written as Twenty-one billion, three hundred eighty-nine million, two hundred fifteen thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.138921568 × 1010
Factors of 21389215680
Divisors of 21389215680
- Number of divisors d(n): 336
-
Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 61 63 64 70 72 80 84 90 96 105 112 120 122 126 140 144 160 168 180 183 192 210 224 240 244 252 280 288 305 315 320 336 360 366 420 427 448 480 488 504 549 560 576 610 630 672 720 732 840 854 915 960 976 1008 1098 1120 1220 1260 1281 1344 1440 1464 1680 1708 1830 1952 2016 2135 2196 2240 2440 2520 2562 2745 2880 2928 3360 3416 3660 3843 3904 4032 4270 4392 4880 5040 5124 5490 5856 6405 6720 6832 7320 7686 8540 8784 9760 10080 10248 10980 11712 12810 13664 14640 15372 17080 17393 17568 19215 19520 20160 20496 21960 25620 27328 29280 30744 34160 34786 35136 38430 40992 43920 51240 52179 58560 61488 68320 69572 76860 81984 86965 87840 102480 104358 121751 122976 136640 139144 153720 156537 173930 175680 204960 208716 243502 245952 260895 278288 307440 313074 347860 365253 409920 417432 487004 521790 556576 608755 614880 626148 695720 730506 782685 834864 974008 1043580 1060973 1095759 1113152 1217510 1229760 1252296 1391440 1461012 1565370 1669728 1826265 1948016 2087160 2121946 2191518 2435020 2504592 2782880 2922024 3130740 3182919 3339456 3652530 3896032 4174320 4243892 4383036 4870040 5009184 5304865 5478795 5565760 5844048 6261480 6365838 7305060 7426811 7792064 8348640 8487784 8766072 9548757 9740080 10018368 10609730 10957590 11688096 12522960 12731676 14610120 14853622 15914595 16697280 16975568 17532144 19097514 19480160 21219460 21915180 22280433 23376192 25045920 25463352 29220240 29707244 31829190 33951136 35064288 37134055 38195028 38960320 42438920 43830360 44560866 47743785 50091840 50926704 58440480 59414488 63658380 66841299 67902272 70128576 74268110 76390056 84877840 87660720 89121732 95487570 101853408 111402165 116880960 118828976 127316760 133682598 148536220 152780112 169755680 175321440 178243464 190975140 203706816 222804330 237657952 254633520 267365196 297072440 305560224 334206495 339511360 350642880 356486928 381950280 445608660 475315904 509267040 534730392 594144880 611120448 668412990 712973856 763900560 891217320 1018534080 1069460784 1188289760 1336825980 1425947712 1527801120 1782434640 2138921568 2376579520 2673651960 3055602240 3564869280 4277843136 5347303920 7129738560 10694607840 21389215680
- Sum of all divisors σ(n): 85463262144
- Sum of proper divisors (its aliquot sum) s(n): 64074046464
- 21389215680 is an abundant number, because the sum of its proper divisors (64074046464) is greater than itself. Its abundance is 42684830784
Bases of 21389215680
- Binary: 100111110101110010110000111110000002
- Hexadecimal: 0x4FAE587C0
- Base-36: 9TQL4G0
Squares and roots of 21389215680
- 21389215680 squared (213892156802) is 457498547405557862400
- 21389215680 cubed (213892156803) is 9785535103744181549593362432000
-
The
square root of 21389215680 is 146250.5236913701 -
The
cube root of 21389215680 is 2775.8646519121
Scales and comparisons
How big is 21389215680?- 21,389,215,680 seconds is equal to 680 years, 5 weeks, 5 days, 8 hours, 48 minutes.
-
To count from 1 to 21,389,215,680 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 21389215680 cubic inches would be around 231.3 feet tall.
Recreational maths with 21389215680
- 21389215680 backwards is 08651298312
- 21389215680 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21389215680's digits is 45
- More coming soon!
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