21490686720
21,490,686,720 is an even composite number composed of four prime numbers multiplied together.
21490686720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 21490686720:
28 × 39 × 5 × 853
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 853)See below for interesting mathematical facts about the number 21490686720 from the Numbermatics database.
Names of 21490686720
- Cardinal: 21490686720 can be written as Twenty-one billion, four hundred ninety million, six hundred eighty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.149068672 × 1010
Factors of 21490686720
Divisors of 21490686720
- Number of divisors d(n): 360
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 128 135 144 160 162 180 192 216 240 243 256 270 288 320 324 360 384 405 432 480 486 540 576 640 648 720 729 768 810 853 864 960 972 1080 1152 1215 1280 1296 1440 1458 1620 1706 1728 1920 1944 2160 2187 2304 2430 2559 2592 2880 2916 3240 3412 3456 3645 3840 3888 4265 4320 4374 4860 5118 5184 5760 5832 6480 6561 6824 6912 7290 7677 7776 8530 8640 8748 9720 10236 10368 10935 11520 11664 12795 12960 13122 13648 14580 15354 15552 17060 17280 17496 19440 19683 20472 20736 21870 23031 23328 25590 25920 26244 27296 29160 30708 31104 32805 34120 34560 34992 38385 38880 39366 40944 43740 46062 46656 51180 51840 52488 54592 58320 61416 62208 65610 68240 69093 69984 76770 77760 78732 81888 87480 92124 93312 98415 102360 103680 104976 109184 115155 116640 122832 131220 136480 138186 139968 153540 155520 157464 163776 174960 184248 186624 196830 204720 207279 209952 218368 230310 233280 245664 262440 272960 276372 279936 307080 311040 314928 327552 345465 349920 368496 393660 409440 414558 419904 460620 466560 491328 524880 545920 552744 559872 614160 621837 629856 655104 690930 699840 736992 787320 818880 829116 839808 921240 933120 982656 1036395 1049760 1091840 1105488 1228320 1243674 1259712 1381860 1399680 1473984 1574640 1637760 1658232 1679616 1842480 1865511 1965312 2072790 2099520 2210976 2456640 2487348 2519424 2763720 2799360 2947968 3109185 3149280 3275520 3316464 3684960 3731022 4145580 4199040 4421952 4913280 4974696 5038848 5527440 5596533 5895936 6218370 6298560 6632928 7369920 7462044 8291160 8398080 8843904 9327555 9826560 9949392 11054880 11193066 12436740 12597120 13265856 14739840 14924088 16582320 16789599 17687808 18655110 19898784 22109760 22386132 24873480 25194240 26531712 27982665 29479680 29848176 33164640 33579198 37310220 39797568 44219520 44772264 49746960 53063424 55965330 59696352 66329280 67158396 74620440 79595136 83947995 88439040 89544528 99493920 111930660 119392704 132658560 134316792 149240880 159190272 167895990 179089056 198987840 223861320 238785408 265317120 268633584 298481760 335791980 358178112 397975680 447722640 477570816 537267168 596963520 671583960 716356224 795951360 895445280 1074534336 1193927040 1343167920 1432712448 1790890560 2149068672 2387854080 2686335840 3581781120 4298137344 5372671680 7163562240 10745343360 21490686720
- Sum of all divisors σ(n): 77304578736
- Sum of proper divisors (its aliquot sum) s(n): 55813892016
- 21490686720 is an abundant number, because the sum of its proper divisors (55813892016) is greater than itself. Its abundance is 34323205296
Bases of 21490686720
- Binary: 101000000001111000111011011000000002
- Hexadecimal: 0x500F1DB00
- Base-36: 9VF0000
Squares and roots of 21490686720
- 21490686720 squared (214906867202) is 461849615697184358400
- 21490686720 cubed (214906867203) is 9925465402700583432458600448000
-
The
square root of 21490686720 is 146597.0215249953 -
The
cube root of 21490686720 is 2780.2473219917
Scales and comparisons
How big is 21490686720?- 21,490,686,720 seconds is equal to 683 years, 17 weeks, 3 days, 19 hours, 12 minutes.
-
To count from 1 to 21,490,686,720 would take you about one thousand, three hundred sixty-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 21490686720 cubic inches would be around 231.7 feet tall.
Recreational maths with 21490686720
- 21490686720 backwards is 02768609412
- 21490686720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21490686720's digits is 45
- More coming soon!
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