21172278720
21,172,278,720 is an even composite number composed of five prime numbers multiplied together.
21172278720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 21172278720:
26 × 3 × 5 × 173 × 672
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 17 × 17 × 67 × 67)See below for interesting mathematical facts about the number 21172278720 from the Numbermatics database.
Names of 21172278720
- Cardinal: 21172278720 can be written as Twenty-one billion, one hundred seventy-two million, two hundred seventy-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.117227872 × 1010
Factors of 21172278720
Divisors of 21172278720
- Number of divisors d(n): 336
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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 67 68 80 85 96 102 120 134 136 160 170 192 201 204 240 255 268 272 289 320 335 340 402 408 480 510 536 544 578 670 680 804 816 867 960 1005 1020 1072 1088 1139 1156 1340 1360 1445 1608 1632 1734 2010 2040 2144 2278 2312 2680 2720 2890 3216 3264 3417 3468 4020 4080 4288 4335 4489 4556 4624 4913 5360 5440 5695 5780 6432 6834 6936 8040 8160 8670 8978 9112 9248 9826 10720 11390 11560 12864 13467 13668 13872 14739 16080 16320 17085 17340 17956 18224 18496 19363 19652 21440 22445 22780 23120 24565 26934 27336 27744 29478 32160 34170 34680 35912 36448 38726 39304 44890 45560 46240 49130 53868 54672 55488 58089 58956 64320 67335 68340 69360 71824 72896 73695 76313 77452 78608 89780 91120 92480 96815 98260 107736 109344 116178 117912 134670 136680 138720 143648 147390 152626 154904 157216 179560 182240 193630 196520 215472 218688 228939 232356 235824 269340 273360 277440 287296 290445 294780 305252 309808 314432 329171 359120 364480 381565 387260 393040 430944 457878 464712 471648 538680 546720 580890 589560 610504 619616 658342 718240 763130 774520 786080 861888 915756 929424 943296 987513 1077360 1093440 1144695 1161780 1179120 1221008 1239232 1297321 1316684 1436480 1526260 1549040 1572160 1645855 1831512 1858848 1975026 2154720 2289390 2323560 2358240 2442016 2594642 2633368 3052520 3098080 3291710 3663024 3717696 3891963 3950052 4309440 4578780 4647120 4716480 4884032 4937565 5189284 5266736 6105040 6196160 6486605 6583420 7326048 7783926 7900104 9157560 9294240 9875130 10378568 10533472 12210080 12973210 13166840 14652096 15567852 15800208 18315120 18588480 19459815 19750260 20757136 21066944 22054457 24420160 25946420 26333680 31135704 31600416 36630240 38919630 39500520 41514272 44108914 51892840 52667360 62271408 63200832 66163371 73260480 77839260 79001040 83028544 88217828 103785680 105334720 110272285 124542816 132326742 155678520 158002080 176435656 207571360 220544570 249085632 264653484 311357040 316004160 330816855 352871312 415142720 441089140 529306968 622714080 661633710 705742624 882178280 1058613936 1245428160 1323267420 1411485248 1764356560 2117227872 2646534840 3528713120 4234455744 5293069680 7057426240 10586139360 21172278720
- Sum of all divisors σ(n): 72504421920
- Sum of proper divisors (its aliquot sum) s(n): 51332143200
- 21172278720 is an abundant number, because the sum of its proper divisors (51332143200) is greater than itself. Its abundance is 30159864480
Bases of 21172278720
- Binary: 100111011011111011101010101110000002
- Hexadecimal: 0x4EDF755C0
- Base-36: 9Q5FETC
Squares and roots of 21172278720
- 21172278720 squared (211722787202) is 448265386197364838400
- 21172278720 cubed (211722787203) is 9490799697099049288132558848000
-
The
square root of 21172278720 is 145506.9713793811 -
The
cube root of 21172278720 is 2766.4481455769
Scales and comparisons
How big is 21172278720?- 21,172,278,720 seconds is equal to 673 years, 11 weeks, 12 hours, 32 minutes.
-
To count from 1 to 21,172,278,720 would take you about one thousand, three hundred forty-six 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 21172278720 cubic inches would be around 230.5 feet tall.
Recreational maths with 21172278720
- 21172278720 backwards is 02787227112
- The number of decimal digits it has is: 11
- The sum of 21172278720's digits is 39
- More coming soon!
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