20721709470
20,721,709,470 is an even composite number composed of seven prime numbers multiplied together.
20721709470 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 20721709470:
2 × 3 × 5 × 72 × 11 × 23 × 55717
(2 × 3 × 5 × 7 × 7 × 11 × 23 × 55717)See below for interesting mathematical facts about the number 20721709470 from the Numbermatics database.
Names of 20721709470
- Cardinal: 20721709470 can be written as Twenty billion, seven hundred twenty-one million, seven hundred nine thousand, four hundred seventy.
Scientific notation
- Scientific notation: 2.072170947 × 1010
Factors of 20721709470
Divisors of 20721709470
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 5 6 7 10 11 14 15 21 22 23 30 33 35 42 46 49 55 66 69 70 77 98 105 110 115 138 147 154 161 165 210 230 231 245 253 294 322 330 345 385 462 483 490 506 539 690 735 759 770 805 966 1078 1127 1155 1265 1470 1518 1610 1617 1771 2254 2310 2415 2530 2695 3234 3381 3542 3795 4830 5313 5390 5635 6762 7590 8085 8855 10626 11270 12397 16170 16905 17710 24794 26565 33810 37191 53130 55717 61985 74382 111434 123970 167151 185955 278585 334302 371910 390019 557170 612887 780038 835755 1170057 1225774 1281491 1671510 1838661 1950095 2340114 2562982 2730133 3064435 3677322 3844473 3900190 4290209 5460266 5850285 6128870 6407455 7688946 8190399 8580418 8970437 9193305 11700570 12814910 12870627 13650665 14096401 16380798 17940874 18386610 19222365 21451045 25741254 26911311 27301330 28192802 30031463 38444730 40951995 42289203 42902090 44852185 53822622 60062926 62793059 64353135 70482005 81903990 84578406 89704370 90094389 98674807 125586118 128706270 134556555 140964010 150157315 180188778 188379177 197349614 211446015 269113110 296024421 300314630 313965295 376758354 422892030 450471945 493374035 592048842 627930590 690723649 900943890 941895885 986748070 1381447298 1480122105 1883791770 2072170947 2960244210 3453618245 4144341894 6907236490 10360854735 20721709470
- Sum of all divisors σ(n): 65856001536
- Sum of proper divisors (its aliquot sum) s(n): 45134292066
- 20721709470 is an abundant number, because the sum of its proper divisors (45134292066) is greater than itself. Its abundance is 24412582596
Bases of 20721709470
- Binary: 100110100110001110000110001100111102
- Hexadecimal: 0x4D31C319E
- Base-36: 9IP65CU
Squares and roots of 20721709470
- 20721709470 squared (207217094702) is 429389243359087680900
- 20721709470 cubed (207217094703) is 8897679150430141807865868123000
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The
square root of 20721709470 is 143950.3715521429 -
The
cube root of 20721709470 is 2746.6829192969
Scales and comparisons
How big is 20721709470?- 20,721,709,470 seconds is equal to 658 years, 46 weeks, 14 hours, 24 minutes, 30 seconds.
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To count from 1 to 20,721,709,470 would take you about one thousand, three hundred seventeen 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 20721709470 cubic inches would be around 228.9 feet tall.
Recreational maths with 20721709470
- 20721709470 backwards is 07490712702
- The number of decimal digits it has is: 11
- The sum of 20721709470's digits is 39
- More coming soon!
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