21361491720
21,361,491,720 is an even composite number composed of five prime numbers multiplied together.
21361491720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21361491720:
23 × 34 × 5 × 823 × 8011
(2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 823 × 8011)See below for interesting mathematical facts about the number 21361491720 from the Numbermatics database.
Names of 21361491720
- Cardinal: 21361491720 can be written as Twenty-one billion, three hundred sixty-one million, four hundred ninety-one thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.136149172 × 1010
Factors of 21361491720
Divisors of 21361491720
- Number of divisors d(n): 160
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 270 324 360 405 540 648 810 823 1080 1620 1646 2469 3240 3292 4115 4938 6584 7407 8011 8230 9876 12345 14814 16022 16460 19752 22221 24033 24690 29628 32044 32920 37035 40055 44442 48066 49380 59256 64088 66663 72099 74070 80110 88884 96132 98760 111105 120165 133326 144198 148140 160220 177768 192264 216297 222210 240330 266652 288396 296280 320440 333315 360495 432594 444420 480660 533304 576792 648891 666630 720990 865188 888840 961320 1081485 1297782 1333260 1441980 1730376 2162970 2595564 2666520 2883960 3244455 4325940 5191128 6488910 6593053 8651880 12977820 13186106 19779159 25955640 26372212 32965265 39558318 52744424 59337477 65930530 79116636 98895795 118674954 131861060 158233272 178012431 197791590 237349908 263722120 296687385 356024862 395583180 474699816 534037293 593374770 712049724 791166360 890062155 1068074586 1186749540 1424099448 1780124310 2136149172 2373499080 2670186465 3560248620 4272298344 5340372930 7120497240 10680745860 21361491720
- Sum of all divisors σ(n): 71894560320
- Sum of proper divisors (its aliquot sum) s(n): 50533068600
- 21361491720 is an abundant number, because the sum of its proper divisors (50533068600) is greater than itself. Its abundance is 29171576880
Bases of 21361491720
- Binary: 100111110010011111001111111000010002
- Hexadecimal: 0x4F93E7F08
- Base-36: 9TA2WI0
Squares and roots of 21361491720
- 21361491720 squared (213614917202) is 456313328503628558400
- 21361491720 cubed (213614917203) is 9747533388555901440217136448000
-
The
square root of 21361491720 is 146155.7105281897 -
The
cube root of 21361491720 is 2774.6648068473
Scales and comparisons
How big is 21361491720?- 21,361,491,720 seconds is equal to 679 years, 11 weeks, 6 days, 11 hours, 42 minutes.
-
To count from 1 to 21,361,491,720 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 21361491720 cubic inches would be around 231.2 feet tall.
Recreational maths with 21361491720
- 21361491720 backwards is 02719416312
- 21361491720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21361491720's digits is 36
- More coming soon!
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