21007472668
21,007,472,668 is an even composite number composed of four prime numbers multiplied together.
21007472668 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred sixty-two divisors.
Prime factorization of 21007472668:
22 × 75 × 132 × 432
(2 × 2 × 7 × 7 × 7 × 7 × 7 × 13 × 13 × 43 × 43)See below for interesting mathematical facts about the number 21007472668 from the Numbermatics database.
Names of 21007472668
- Cardinal: 21007472668 can be written as Twenty-one billion, seven million, four hundred seventy-two thousand, six hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1007472668 × 1010
Factors of 21007472668
Divisors of 21007472668
- Number of divisors d(n): 162
-
Complete list of divisors:
1 2 4 7 13 14 26 28 43 49 52 86 91 98 169 172 182 196 301 338 343 364 559 602 637 676 686 1118 1183 1204 1274 1372 1849 2107 2236 2366 2401 2548 3698 3913 4214 4459 4732 4802 7267 7396 7826 8281 8428 8918 9604 12943 14534 14749 15652 16562 16807 17836 24037 25886 27391 29068 29498 31213 33124 33614 48074 50869 51772 54782 57967 58996 62426 67228 90601 96148 101738 103243 109564 115934 124852 168259 181202 191737 203476 206486 218491 231868 312481 336518 356083 362404 383474 405769 412972 436982 624962 634207 673036 712166 722701 766948 811538 873964 1177813 1249924 1268414 1342159 1424332 1445402 1623076 2187367 2355626 2492581 2536828 2684318 2840383 2890804 4374734 4439449 4711252 4985162 5368636 5680766 8244691 8749468 8878898 9395113 9970324 11361532 15311569 16489382 17448067 17757796 18790226 30623138 31076143 32978764 34896134 37580452 57712837 61246276 62152286 69792268 107180983 115425674 122136469 124304572 214361966 230851348 244272938 403989859 428723932 488545876 750266881 807979718 1500533762 1615959436 3001067524 5251868167 10503736334 21007472668
- Sum of all divisors σ(n): 47548086264
- Sum of proper divisors (its aliquot sum) s(n): 26540613596
- 21007472668 is an abundant number, because the sum of its proper divisors (26540613596) is greater than itself. Its abundance is 5533140928
Bases of 21007472668
- Binary: 100111001000010010010011000000111002
- Hexadecimal: 0x4E424981C
- Base-36: 9NFB1NG
Squares and roots of 21007472668
- 21007472668 squared (210074726682) is 441313907896767038224
- 21007472668 cubed (210074726683) is 9270889858149602921053991261632
-
The
square root of 21007472668 is 144939.5483227405 -
The
cube root of 21007472668 is 2759.2513839921
Scales and comparisons
How big is 21007472668?- 21,007,472,668 seconds is equal to 667 years, 50 weeks, 4 days, 1 hour, 4 minutes, 28 seconds.
-
To count from 1 to 21,007,472,668 would take you about one thousand, three hundred thirty-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 21007472668 cubic inches would be around 229.9 feet tall.
Recreational maths with 21007472668
- 21007472668 backwards is 86627470012
- 21007472668 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21007472668's digits is 43
- More coming soon!
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