21042896720
21,042,896,720 is an even composite number composed of six prime numbers multiplied together.
21042896720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21042896720:
24 × 5 × 19 × 31 × 61 × 7321
(2 × 2 × 2 × 2 × 5 × 19 × 31 × 61 × 7321)See below for interesting mathematical facts about the number 21042896720 from the Numbermatics database.
Names of 21042896720
- Cardinal: 21042896720 can be written as Twenty-one billion, forty-two million, eight hundred ninety-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.104289672 × 1010
Factors of 21042896720
Divisors of 21042896720
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 5 8 10 16 19 20 31 38 40 61 62 76 80 95 122 124 152 155 190 244 248 304 305 310 380 488 496 589 610 620 760 976 1159 1178 1220 1240 1520 1891 2318 2356 2440 2480 2945 3782 4636 4712 4880 5795 5890 7321 7564 9272 9424 9455 11590 11780 14642 15128 18544 18910 23180 23560 29284 30256 35929 36605 37820 46360 47120 58568 71858 73210 75640 92720 117136 139099 143716 146420 151280 179645 226951 278198 287432 292840 359290 446581 453902 556396 574864 585680 695495 718580 893162 907804 1112792 1134755 1390990 1437160 1786324 1815608 2225584 2232905 2269510 2781980 2874320 3572648 3631216 4312069 4465810 4539020 5563960 7145296 8485039 8624138 8931620 9078040 11127920 13844011 16970078 17248276 17863240 18156080 21560345 27688022 33940156 34496552 35726480 42425195 43120690 55376044 67880312 68993104 69220055 84850390 86241380 110752088 135760624 138440110 169700780 172482760 221504176 263036209 276880220 339401560 344965520 526072418 553760440 678803120 1052144836 1107520880 1315181045 2104289672 2630362090 4208579344 5260724180 10521448360 21042896720
- Sum of all divisors σ(n): 54039874560
- Sum of proper divisors (its aliquot sum) s(n): 32996977840
- 21042896720 is an abundant number, because the sum of its proper divisors (32996977840) is greater than itself. Its abundance is 11954081120
Bases of 21042896720
- Binary: 100111001100100000100011111010100002
- Hexadecimal: 0x4E6411F50
- Base-36: 9O0EB0W
Squares and roots of 21042896720
- 21042896720 squared (210428967202) is 442803502368586758400
- 21042896720 cubed (210428967203) is 9317868367596446529370792448000
-
The
square root of 21042896720 is 145061.6997005067 -
The
cube root of 21042896720 is 2760.8014510713
Scales and comparisons
How big is 21042896720?- 21,042,896,720 seconds is equal to 669 years, 5 weeks, 1 day, 1 hour, 5 minutes, 20 seconds.
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To count from 1 to 21,042,896,720 would take you about one thousand, three hundred thirty-eight 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 21042896720 cubic inches would be around 230.1 feet tall.
Recreational maths with 21042896720
- 21042896720 backwards is 02769824012
- The number of decimal digits it has is: 11
- The sum of 21042896720's digits is 41
- More coming soon!
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