21349863440
21,349,863,440 is an even composite number composed of four prime numbers multiplied together.
21349863440 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21349863440:
24 × 5 × 172 × 923437
(2 × 2 × 2 × 2 × 5 × 17 × 17 × 923437)See below for interesting mathematical facts about the number 21349863440 from the Numbermatics database.
Names of 21349863440
- Cardinal: 21349863440 can be written as Twenty-one billion, three hundred forty-nine million, eight hundred sixty-three thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.134986344 × 1010
Factors of 21349863440
Divisors of 21349863440
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 289 340 578 680 1156 1360 1445 2312 2890 4624 5780 11560 23120 923437 1846874 3693748 4617185 7387496 9234370 14774992 15698429 18468740 31396858 36937480 62793716 73874960 78492145 125587432 156984290 251174864 266873293 313968580 533746586 627937160 1067493172 1255874320 1334366465 2134986344 2668732930 4269972688 5337465860 10674931720 21349863440
- Sum of all divisors σ(n): 52730156676
- Sum of proper divisors (its aliquot sum) s(n): 31380293236
- 21349863440 is an abundant number, because the sum of its proper divisors (31380293236) is greater than itself. Its abundance is 10030429796
Bases of 21349863440
- Binary: 100111110001000110100010000000100002
- Hexadecimal: 0x4F88D1010
- Base-36: 9T35O28
Squares and roots of 21349863440
- 21349863440 squared (213498634402) is 455816668906648633600
- 21349863440 cubed (213498634403) is 9731623634832642435422595584000
-
The
square root of 21349863440 is 146115.9246625775 -
The
cube root of 21349863440 is 2774.1612459545
Scales and comparisons
How big is 21349863440?- 21,349,863,440 seconds is equal to 678 years, 44 weeks, 4 days, 21 hours, 37 minutes, 20 seconds.
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To count from 1 to 21,349,863,440 would take you about one thousand, three hundred fifty-seven 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 21349863440 cubic inches would be around 231.2 feet tall.
Recreational maths with 21349863440
- 21349863440 backwards is 04436894312
- The number of decimal digits it has is: 11
- The sum of 21349863440's digits is 44
- More coming soon!
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