21378789873
21,378,789,873 is an odd composite number composed of six prime numbers multiplied together.
21378789873 is an odd composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21378789873:
32 × 7 × 19 × 31 × 571 × 1009
(3 × 3 × 7 × 19 × 31 × 571 × 1009)See below for interesting mathematical facts about the number 21378789873 from the Numbermatics database.
Names of 21378789873
- Cardinal: 21378789873 can be written as Twenty-one billion, three hundred seventy-eight million, seven hundred eighty-nine thousand, eight hundred seventy-three.
Scientific notation
- Scientific notation: 2.1378789873 × 1010
Factors of 21378789873
Divisors of 21378789873
- Number of divisors d(n): 96
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Complete list of divisors:
1 3 7 9 19 21 31 57 63 93 133 171 217 279 399 571 589 651 1009 1197 1713 1767 1953 3027 3997 4123 5139 5301 7063 9081 10849 11991 12369 17701 19171 21189 31279 32547 35973 37107 53103 57513 63567 75943 93837 97641 123907 134197 159309 172539 218953 227829 281511 336319 371721 402591 576139 594301 656859 683487 1008957 1115163 1207773 1728417 1782903 1970577 2354233 3026871 4032973 4160107 5185251 5348709 7062699 10946641 12098919 12480321 17860309 21188097 32839923 36296757 37440963 53580927 76626487 98519769 125022163 160742781 229879461 339345871 375066489 689638383 1018037613 1125199467 2375421097 3054112839 7126263291 21378789873
- Sum of all divisors σ(n): 38453043200
- Sum of proper divisors (its aliquot sum) s(n): 17074253327
- 21378789873 is a deficient number, because the sum of its proper divisors (17074253327) is less than itself. Its deficiency is 4304536546
Bases of 21378789873
- Binary: 100111110100100011001110001111100012
- Hexadecimal: 0x4FA4671F1
- Base-36: 9TKDNU9
Squares and roots of 21378789873
- 21378789873 squared (213787898732) is 457052656433887356129
- 21378789873 cubed (213787898733) is 9771232702796539303233409681617
-
The
square root of 21378789873 is 146214.8756898559 -
The
cube root of 21378789873 is 2775.4135627117
Scales and comparisons
How big is 21378789873?- 21,378,789,873 seconds is equal to 679 years, 40 weeks, 3 days, 16 hours, 44 minutes, 33 seconds.
-
To count from 1 to 21,378,789,873 would take you about one thousand, three hundred fifty-nine 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 21378789873 cubic inches would be around 231.3 feet tall.
Recreational maths with 21378789873
- 21378789873 backwards is 37898787312
- 21378789873 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21378789873's digits is 63
- More coming soon!
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