21047472940
21,047,472,940 is an even composite number composed of seven prime numbers multiplied together.
21047472940 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21047472940:
22 × 5 × 132 × 31 × 37 × 61 × 89
(2 × 2 × 5 × 13 × 13 × 31 × 37 × 61 × 89)See below for interesting mathematical facts about the number 21047472940 from the Numbermatics database.
Names of 21047472940
- Cardinal: 21047472940 can be written as Twenty-one billion, forty-seven million, four hundred seventy-two thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.104747294 × 1010
Factors of 21047472940
Divisors of 21047472940
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 10 13 20 26 31 37 52 61 62 65 74 89 122 124 130 148 155 169 178 185 244 260 305 310 338 356 370 403 445 481 610 620 676 740 793 806 845 890 962 1147 1157 1220 1586 1612 1690 1780 1891 1924 2015 2257 2294 2314 2405 2759 3172 3293 3380 3782 3965 4030 4514 4588 4628 4810 5239 5429 5518 5735 5785 6253 6586 7564 7930 8060 9028 9455 9620 10309 10478 10858 11036 11285 11470 11570 12506 13172 13795 14911 15041 15860 16465 18910 20618 20956 21716 22570 22940 23140 24583 25012 26195 27145 27590 29341 29822 30082 31265 32930 35867 37820 41236 42809 45140 49166 51545 52390 54290 55180 58682 59644 60164 62530 65860 69967 70577 71734 74555 75205 85618 98332 102083 103090 104780 108580 117364 122915 125060 139934 141154 143468 146705 149110 150410 168299 171236 179335 193843 200873 204166 206180 214045 245830 279868 282308 293410 298220 300820 319579 336598 349835 352885 358670 381433 387686 401746 408332 428090 466271 491660 510415 556517 586820 639158 673196 699670 705770 717340 762866 775372 803492 841495 856180 909571 917501 932542 969215 1004365 1020830 1113034 1278316 1327079 1399340 1411540 1525732 1597895 1682990 1819142 1835002 1865084 1907165 1938430 2008730 2041660 2187887 2226068 2331355 2611349 2654158 2782585 3195790 3365980 3638284 3670004 3814330 3876860 4017460 4375774 4547855 4587505 4662710 5222698 5308316 5565170 6227063 6391580 6635395 7628660 8751548 9095710 9175010 9325420 10445396 10939435 11130340 11824423 12454126 13056745 13270790 17252027 18191420 18350020 21878870 23648846 24908252 26113490 26541580 28442531 31135315 33947537 34504054 43757740 47297692 52226980 56885062 59122115 62270630 67895074 69008108 80951819 86260135 113770124 118244230 124541260 135790148 142212655 161903638 169737685 172520270 236488460 284425310 323807276 339475370 345040540 404759095 568850620 678950740 809518190 1052373647 1619036380 2104747294 4209494588 5261868235 10523736470 21047472940
- Sum of all divisors σ(n): 52151662080
- Sum of proper divisors (its aliquot sum) s(n): 31104189140
- 21047472940 is an abundant number, because the sum of its proper divisors (31104189140) is greater than itself. Its abundance is 10056716200
Bases of 21047472940
- Binary: 100111001101000011011110011001011002
- Hexadecimal: 0x4E686F32C
- Base-36: 9O34E24
Squares and roots of 21047472940
- 21047472940 squared (210474729402) is 442996117160032243600
- 21047472940 cubed (210474729403) is 9323948788450848296698488184000
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The
square root of 21047472940 is 145077.4722002007 -
The
cube root of 21047472940 is 2761.0015679921
Scales and comparisons
How big is 21047472940?- 21,047,472,940 seconds is equal to 669 years, 12 weeks, 5 days, 15 minutes, 40 seconds.
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To count from 1 to 21,047,472,940 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 21047472940 cubic inches would be around 230.1 feet tall.
Recreational maths with 21047472940
- 21047472940 backwards is 04927474012
- The number of decimal digits it has is: 11
- The sum of 21047472940's digits is 40
- More coming soon!
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