21155430400
21,155,430,400 is an even composite number composed of five prime numbers multiplied together.
21155430400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 21155430400:
214 × 52 × 13 × 29 × 137
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 13 × 29 × 137)See below for interesting mathematical facts about the number 21155430400 from the Numbermatics database.
Names of 21155430400
- Cardinal: 21155430400 can be written as Twenty-one billion, one hundred fifty-five million, four hundred thirty thousand, four hundred.
Scientific notation
- Scientific notation: 2.11554304 × 1010
Factors of 21155430400
Divisors of 21155430400
- Number of divisors d(n): 360
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 25 26 29 32 40 50 52 58 64 65 80 100 104 116 128 130 137 145 160 200 208 232 256 260 274 290 320 325 377 400 416 464 512 520 548 580 640 650 685 725 754 800 832 928 1024 1040 1096 1160 1280 1300 1370 1450 1508 1600 1664 1781 1856 1885 2048 2080 2192 2320 2560 2600 2740 2900 3016 3200 3328 3425 3562 3712 3770 3973 4096 4160 4384 4640 5120 5200 5480 5800 6032 6400 6656 6850 7124 7424 7540 7946 8192 8320 8768 8905 9280 9425 10240 10400 10960 11600 12064 12800 13312 13700 14248 14848 15080 15892 16384 16640 17536 17810 18560 18850 19865 20480 20800 21920 23200 24128 25600 26624 27400 28496 29696 30160 31784 33280 35072 35620 37120 37700 39730 40960 41600 43840 44525 46400 48256 51200 51649 53248 54800 56992 59392 60320 63568 66560 70144 71240 74240 75400 79460 81920 83200 87680 89050 92800 96512 99325 102400 103298 106496 109600 113984 118784 120640 127136 133120 140288 142480 148480 150800 158920 166400 175360 178100 185600 193024 198650 204800 206596 212992 219200 227968 237568 241280 254272 258245 266240 280576 284960 296960 301600 317840 332800 350720 356200 371200 386048 397300 409600 413192 438400 455936 475136 482560 508544 516490 532480 561152 569920 593920 603200 635680 665600 701440 712400 742400 772096 794600 826384 876800 911872 965120 1017088 1032980 1064960 1122304 1139840 1187840 1206400 1271360 1291225 1331200 1402880 1424800 1484800 1544192 1589200 1652768 1753600 1823744 1930240 2034176 2065960 2244608 2279680 2375680 2412800 2542720 2582450 2662400 2805760 2849600 2969600 3088384 3178400 3305536 3507200 3647488 3860480 4068352 4131920 4559360 4825600 5085440 5164900 5324800 5611520 5699200 5939200 6176768 6356800 6611072 7014400 7294976 7720960 8136704 8263840 9118720 9651200 10170880 10329800 11223040 11398400 11878400 12713600 13222144 14028800 14589952 15441920 16273408 16527680 18237440 19302400 20341760 20659600 22796800 25427200 26444288 28057600 29179904 30883840 32546816 33055360 36474880 38604800 40683520 41319200 45593600 50854400 52888576 56115200 65093632 66110720 72949760 77209600 81367040 82638400 91187200 101708800 105777152 132221440 145899520 154419200 162734080 165276800 182374400 203417600 211554304 264442880 325468160 330553600 364748800 406835200 423108608 528885760 661107200 729497600 813670400 846217216 1057771520 1322214400 1627340800 2115543040 2644428800 4231086080 5288857600 10577715200 21155430400
- Sum of all divisors σ(n): 58874434920
- Sum of proper divisors (its aliquot sum) s(n): 37719004520
- 21155430400 is an abundant number, because the sum of its proper divisors (37719004520) is greater than itself. Its abundance is 16563574120
Bases of 21155430400
- Binary: 100111011001111011001000000000000002
- Hexadecimal: 0x4ECF64000
- Base-36: 9PVEAKG
Squares and roots of 21155430400
- 21155430400 squared (211554304002) is 447552235409244160000
- 21155430400 cubed (211554304003) is 9468160166564680343486464000000
-
The
square root of 21155430400 is 145449.0646240119 -
The
cube root of 21155430400 is 2765.7141295967
Scales and comparisons
How big is 21155430400?- 21,155,430,400 seconds is equal to 672 years, 35 weeks, 1 day, 12 hours, 26 minutes, 40 seconds.
-
To count from 1 to 21,155,430,400 would take you about one thousand, three hundred forty-five 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 21155430400 cubic inches would be around 230.5 feet tall.
Recreational maths with 21155430400
- 21155430400 backwards is 00403455112
- 21155430400 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21155430400's digits is 25
- More coming soon!
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