21084678225
21,084,678,225 is an odd composite number composed of five prime numbers multiplied together.
21084678225 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21084678225:
32 × 52 × 13 × 47 × 153371
(3 × 3 × 5 × 5 × 13 × 47 × 153371)See below for interesting mathematical facts about the number 21084678225 from the Numbermatics database.
Names of 21084678225
- Cardinal: 21084678225 can be written as Twenty-one billion, eighty-four million, six hundred seventy-eight thousand, two hundred twenty-five.
Scientific notation
- Scientific notation: 2.1084678225 × 1010
Factors of 21084678225
Divisors of 21084678225
- Number of divisors d(n): 72
-
Complete list of divisors:
1 3 5 9 13 15 25 39 45 47 65 75 117 141 195 225 235 325 423 585 611 705 975 1175 1833 2115 2925 3055 3525 5499 9165 10575 15275 27495 45825 137475 153371 460113 766855 1380339 1993823 2300565 3834275 5981469 6901695 7208437 9969115 11502825 17944407 21625311 29907345 34508475 36042185 49845575 64875933 89722035 93709681 108126555 149536725 180210925 281129043 324379665 448610175 468548405 540632775 843387129 1405645215 1621898325 2342742025 4216935645 7028226075 21084678225
- Sum of all divisors σ(n): 41535591552
- Sum of proper divisors (its aliquot sum) s(n): 20450913327
- 21084678225 is a deficient number, because the sum of its proper divisors (20450913327) is less than itself. Its deficiency is 633764898
Bases of 21084678225
- Binary: 100111010001011111010101000010100012
- Hexadecimal: 0x4E8BEA851
- Base-36: 9OP9TU9
Squares and roots of 21084678225
- 21084678225 squared (210846782252) is 444563655851789150625
- 21084678225 cubed (210846782253) is 9373481634164612531474182640625
-
The
square root of 21084678225 is 145205.6411610789 -
The
cube root of 21084678225 is 2762.6274699409
Scales and comparisons
How big is 21084678225?- 21,084,678,225 seconds is equal to 670 years, 22 weeks, 1 day, 15 hours, 3 minutes, 45 seconds.
-
To count from 1 to 21,084,678,225 would take you about one thousand, three hundred forty 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 21084678225 cubic inches would be around 230.2 feet tall.
Recreational maths with 21084678225
- 21084678225 backwards is 52287648012
- 21084678225 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21084678225's digits is 45
- More coming soon!
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