21309930720
21,309,930,720 is an even composite number composed of six prime numbers multiplied together.
21309930720 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 21309930720:
25 × 32 × 5 × 13 × 31 × 36721
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 13 × 31 × 36721)See below for interesting mathematical facts about the number 21309930720 from the Numbermatics database.
Names of 21309930720
- Cardinal: 21309930720 can be written as Twenty-one billion, three hundred nine million, nine hundred thirty thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.130993072 × 1010
Factors of 21309930720
Divisors of 21309930720
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 31 32 36 39 40 45 48 52 60 62 65 72 78 80 90 93 96 104 117 120 124 130 144 155 156 160 180 186 195 208 234 240 248 260 279 288 310 312 360 372 390 403 416 465 468 480 496 520 558 585 620 624 720 744 780 806 930 936 992 1040 1116 1170 1209 1240 1248 1395 1440 1488 1560 1612 1860 1872 2015 2080 2232 2340 2418 2480 2790 2976 3120 3224 3627 3720 3744 4030 4464 4680 4836 4960 5580 6045 6240 6448 7254 7440 8060 8928 9360 9672 11160 12090 12896 14508 14880 16120 18135 18720 19344 22320 24180 29016 32240 36270 36721 38688 44640 48360 58032 64480 72540 73442 96720 110163 116064 145080 146884 183605 193440 220326 290160 293768 330489 367210 440652 477373 550815 580320 587536 660978 734420 881304 954746 1101630 1138351 1175072 1321956 1432119 1468840 1652445 1762608 1909492 2203260 2276702 2386865 2643912 2864238 2937680 3304890 3415053 3525216 3818984 4296357 4406520 4553404 4773730 5287824 5691755 5728476 5875360 6609780 6830106 7160595 7637968 8592714 8813040 9106808 9547460 10245159 10575648 11383510 11456952 13219560 13660212 14321190 14798563 15275936 17075265 17185428 17626080 18213616 19094920 20490318 21481785 22767020 22913904 26439120 27320424 28642380 29597126 34150530 34370856 36427232 38189840 40980636 42963570 44395689 45534040 45827808 51225795 52878240 54640848 57284760 59194252 68301060 68741712 73992815 76379680 81961272 85927140 88791378 91068080 102451590 109281696 114569520 118388504 133187067 136602120 137483424 147985630 163922544 171854280 177582756 182136160 204903180 221978445 229139040 236777008 266374134 273204240 295971260 327845088 343708560 355165512 409806360 443956890 473554016 532748268 546408480 591942520 665935335 687417120 710331024 819612720 887913780 1065496536 1183885040 1331870670 1420662048 1639225440 1775827560 2130993072 2367770080 2663741340 3551655120 4261986144 5327482680 7103310240 10654965360 21309930720
- Sum of all divisors σ(n): 80842454784
- Sum of proper divisors (its aliquot sum) s(n): 59532524064
- 21309930720 is an abundant number, because the sum of its proper divisors (59532524064) is greater than itself. Its abundance is 38222593344
Bases of 21309930720
- Binary: 100111101100010101110111100111000002
- Hexadecimal: 0x4F62BBCE0
- Base-36: 9SFDRS0
Squares and roots of 21309930720
- 21309930720 squared (213099307202) is 454113147291199718400
- 21309930720 cubed (213099307203) is 9677119707816621664787509248000
-
The
square root of 21309930720 is 145979.2133147731 -
The
cube root of 21309930720 is 2772.4305722221
Scales and comparisons
How big is 21309930720?- 21,309,930,720 seconds is equal to 677 years, 30 weeks, 4 days, 17 hours, 12 minutes.
-
To count from 1 to 21,309,930,720 would take you about one thousand, three hundred fifty-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 21309930720 cubic inches would be around 231 feet tall.
Recreational maths with 21309930720
- 21309930720 backwards is 02703990312
- 21309930720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21309930720's digits is 36
- More coming soon!
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