21388288320
21,388,288,320 is an even composite number composed of five prime numbers multiplied together.
21388288320 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred fifty-two divisors.
Prime factorization of 21388288320:
26 × 32 × 5 × 72 × 151561
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 7 × 151561)See below for interesting mathematical facts about the number 21388288320 from the Numbermatics database.
Names of 21388288320
- Cardinal: 21388288320 can be written as Twenty-one billion, three hundred eighty-eight million, two hundred eighty-eight thousand, three hundred twenty.
Scientific notation
- Scientific notation: 2.138828832 × 1010
Factors of 21388288320
Divisors of 21388288320
- Number of divisors d(n): 252
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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 49 56 60 63 64 70 72 80 84 90 96 98 105 112 120 126 140 144 147 160 168 180 192 196 210 224 240 245 252 280 288 294 315 320 336 360 392 420 441 448 480 490 504 560 576 588 630 672 720 735 784 840 882 960 980 1008 1120 1176 1260 1344 1440 1470 1568 1680 1764 1960 2016 2205 2240 2352 2520 2880 2940 3136 3360 3528 3920 4032 4410 4704 5040 5880 6720 7056 7840 8820 9408 10080 11760 14112 15680 17640 20160 23520 28224 35280 47040 70560 141120 151561 303122 454683 606244 757805 909366 1060927 1212488 1364049 1515610 1818732 2121854 2273415 2424976 2728098 3031220 3182781 3637464 4243708 4546830 4849952 5304635 5456196 6062440 6365562 6820245 7274928 7426489 8487416 9093660 9548343 9699904 10609270 10912392 12124880 12731124 13640490 14549856 14852978 15913905 16974832 18187320 19096686 21218540 21824784 22279467 24249760 25462248 27280980 29099712 29705956 31827810 33949664 36374640 37132445 38193372 42437080 43649568 44558934 47741715 48499520 50924496 54561960 59411912 63655620 66838401 67899328 72749280 74264890 76386744 84874160 87299136 89117868 95483430 101848992 109123920 111397335 118823824 127311240 133676802 145498560 148529780 152773488 169748320 178235736 190966860 203697984 218247840 222794670 237647648 254622480 267353604 297059560 305546976 334192005 339496640 356471472 381933720 436495680 445589340 475295296 509244960 534707208 594119120 611093952 668384010 712942944 763867440 891178680 1018489920 1069414416 1188238240 1336768020 1425885888 1527734880 1782357360 2138828832 2376476480 2673536040 3055469760 3564714720 4277657664 5347072080 7129429440 10694144160 21388288320
- Sum of all divisors σ(n): 85578270804
- Sum of proper divisors (its aliquot sum) s(n): 64189982484
- 21388288320 is an abundant number, because the sum of its proper divisors (64189982484) is greater than itself. Its abundance is 42801694164
Bases of 21388288320
- Binary: 100111110101101011101100001010000002
- Hexadecimal: 0x4FAD76140
- Base-36: 9TQ18W0
Squares and roots of 21388288320
- 21388288320 squared (213882883202) is 457458877259448422400
- 21388288320 cubed (213882883203) is 9784262361368574302460346368000
-
The
square root of 21388288320 is 146247.3532068189 -
The
cube root of 21388288320 is 2775.8245341399
Scales and comparisons
How big is 21388288320?- 21,388,288,320 seconds is equal to 680 years, 4 weeks, 1 day, 15 hours, 12 minutes.
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To count from 1 to 21,388,288,320 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 21388288320 cubic inches would be around 231.3 feet tall.
Recreational maths with 21388288320
- 21388288320 backwards is 02388288312
- 21388288320 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21388288320's digits is 45
- More coming soon!
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