21355459840
21,355,459,840 is an even composite number composed of six prime numbers multiplied together.
21355459840 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21355459840:
28 × 5 × 11 × 13 × 17 × 6863
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 13 × 17 × 6863)See below for interesting mathematical facts about the number 21355459840 from the Numbermatics database.
Names of 21355459840
- Cardinal: 21355459840 can be written as Twenty-one billion, three hundred fifty-five million, four hundred fifty-nine thousand, eight hundred forty.
Scientific notation
- Scientific notation: 2.135545984 × 1010
Factors of 21355459840
Divisors of 21355459840
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 8 10 11 13 16 17 20 22 26 32 34 40 44 52 55 64 65 68 80 85 88 104 110 128 130 136 143 160 170 176 187 208 220 221 256 260 272 286 320 340 352 374 416 440 442 520 544 572 640 680 704 715 748 832 880 884 935 1040 1088 1105 1144 1280 1360 1408 1430 1496 1664 1760 1768 1870 2080 2176 2210 2288 2431 2720 2816 2860 2992 3328 3520 3536 3740 4160 4352 4420 4576 4862 5440 5720 5984 6863 7040 7072 7480 8320 8840 9152 9724 10880 11440 11968 12155 13726 14080 14144 14960 16640 17680 18304 19448 21760 22880 23936 24310 27452 28288 29920 34315 35360 36608 38896 45760 47872 48620 54904 56576 59840 68630 70720 75493 77792 89219 91520 97240 109808 116671 119680 137260 141440 150986 155584 178438 183040 194480 219616 233342 239360 274520 282880 301972 311168 356876 377465 388960 439232 446095 466684 549040 583355 603944 622336 713752 754930 777920 878464 892190 933368 981409 1098080 1166710 1207888 1283381 1427504 1509860 1516723 1555840 1756928 1784380 1866736 1962818 2196160 2333420 2415776 2566762 2855008 3019720 3033446 3111680 3568760 3733472 3925636 4392320 4666840 4831552 4907045 5133524 5710016 6039440 6066892 6416905 7137520 7466944 7583615 7851272 8784640 9333680 9663104 9814090 10267048 11420032 12078880 12133784 12833810 14275040 14933888 15167230 15702544 16683953 18667360 19326208 19628180 20534096 22840064 24157760 24267568 25667620 28550080 29867776 30334460 31405088 33367906 37334720 39256360 41068192 48315520 48535136 51335240 57100160 60668920 62810176 66735812 74669440 78512720 82136384 83419765 96631040 97070272 102670480 114200320 121337840 125620352 133471624 149338880 157025440 164272768 166839530 194140544 205340960 242675680 251240704 266943248 314050880 328545536 333679060 388281088 410681920 485351360 533886496 628101760 667358120 821363840 970702720 1067772992 1256203520 1334716240 1642727680 1941405440 2135545984 2669432480 4271091968 5338864960 10677729920 21355459840
- Sum of all divisors σ(n): 63640152576
- Sum of proper divisors (its aliquot sum) s(n): 42284692736
- 21355459840 is an abundant number, because the sum of its proper divisors (42284692736) is greater than itself. Its abundance is 20929232896
Bases of 21355459840
- Binary: 100111110001110001001110101000000002
- Hexadecimal: 0x4F8E27500
- Base-36: 9T6HM9S
Squares and roots of 21355459840
- 21355459840 squared (213554598402) is 456055664977852825600
- 21355459840 cubed (213554598403) is 9739278438239030506531323904000
-
The
square root of 21355459840 is 146135.0739555703 -
The
cube root of 21355459840 is 2774.4036200207
Scales and comparisons
How big is 21355459840?- 21,355,459,840 seconds is equal to 679 years, 1 week, 6 days, 16 hours, 10 minutes, 40 seconds.
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To count from 1 to 21,355,459,840 would take you about one thousand, three hundred fifty-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 21355459840 cubic inches would be around 231.2 feet tall.
Recreational maths with 21355459840
- 21355459840 backwards is 04895455312
- The number of decimal digits it has is: 11
- The sum of 21355459840's digits is 46
- More coming soon!
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