12920821515
12,920,821,515 is an odd composite number composed of five prime numbers multiplied together.
12920821515 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 12920821515:
36 × 5 × 72 × 73 × 991
(3 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 7 × 73 × 991)See below for interesting mathematical facts about the number 12920821515 from the Numbermatics database.
Names of 12920821515
- Cardinal: 12920821515 can be written as Twelve billion, nine hundred twenty million, eight hundred twenty-one thousand, five hundred fifteen.
Scientific notation
- Scientific notation: 1.2920821515 × 1010
Factors of 12920821515
Divisors of 12920821515
- Number of divisors d(n): 168
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Complete list of divisors:
1 3 5 7 9 15 21 27 35 45 49 63 73 81 105 135 147 189 219 243 245 315 365 405 441 511 567 657 729 735 945 991 1095 1215 1323 1533 1701 1971 2205 2555 2835 2973 3285 3577 3645 3969 4599 4955 5103 5913 6615 6937 7665 8505 8919 9855 10731 11907 13797 14865 17739 17885 19845 20811 22995 25515 26757 29565 32193 34685 35721 41391 44595 48559 53217 53655 59535 62433 68985 72343 80271 88695 96579 104055 124173 133785 145677 160965 178605 187299 206955 217029 240813 242795 266085 289737 312165 361715 372519 401355 437031 482895 506401 561897 620865 651087 722439 728385 869211 936495 1085145 1204065 1311093 1448685 1519203 1685691 1862595 1953261 2185155 2532005 2607633 2809485 3255435 3544807 3612195 3933279 4346055 4557609 5057073 5859783 6555465 7596015 8428455 9766305 10634421 11799837 13038165 13672827 17579349 17724035 19666395 22788045 25285365 29298915 31903263 35399511 41018481 52738047 53172105 58999185 68364135 87896745 95709789 123055443 159516315 176997555 205092405 263690235 287129367 369166329 478548945 615277215 861388101 1435646835 1845831645 2584164303 4306940505 12920821515
- Sum of all divisors σ(n): 27440350848
- Sum of proper divisors (its aliquot sum) s(n): 14519529333
- 12920821515 is an abundant number, because the sum of its proper divisors (14519529333) is greater than itself. Its abundance is 1598707818
Bases of 12920821515
- Binary: 11000000100010010000010111000010112
- Hexadecimal: 0x30224170B
- Base-36: 5XOQ1OR
Squares and roots of 12920821515
- 12920821515 squared (129208215152) is 166947628622486895225
- 12920821515 cubed (129208215153) is 2157100511783658488628730765875
-
The
square root of 12920821515 is 113669.7915675051 -
The
cube root of 12920821515 is 2346.5512421189
Scales and comparisons
How big is 12920821515?- 12,920,821,515 seconds is equal to 410 years, 43 weeks, 5 days, 13 hours, 5 minutes, 15 seconds.
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To count from 1 to 12,920,821,515 would take you about eight hundred twenty-one 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 12920821515 cubic inches would be around 195.5 feet tall.
Recreational maths with 12920821515
- 12920821515 backwards is 51512802921
- The number of decimal digits it has is: 11
- The sum of 12920821515's digits is 36
- More coming soon!
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