138469905
138,469,905 is an odd composite number composed of four prime numbers multiplied together.
138469905 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty-eight divisors.
Prime factorization of 138469905:
310 × 5 × 7 × 67
(3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 67)See below for interesting mathematical facts about the number 138469905 from the Numbermatics database.
Names of 138469905
- Cardinal: 138469905 can be written as One hundred thirty-eight million, four hundred sixty-nine thousand, nine hundred five.
Scientific notation
- Scientific notation: 1.38469905 × 108
Factors of 138469905
Divisors of 138469905
- Number of divisors d(n): 88
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Complete list of divisors:
1 3 5 7 9 15 21 27 35 45 63 67 81 105 135 189 201 243 315 335 405 469 567 603 729 945 1005 1215 1407 1701 1809 2187 2345 2835 3015 3645 4221 5103 5427 6561 7035 8505 9045 10935 12663 15309 16281 19683 21105 25515 27135 32805 37989 45927 48843 59049 63315 76545 81405 98415 113967 137781 146529 189945 229635 244215 295245 341901 413343 439587 569835 688905 732645 1025703 1318761 1709505 2066715 2197935 3077109 3956283 5128515 6593805 9231327 15385545 19781415 27693981 46156635 138469905
- Sum of all divisors σ(n): 289102272
- Sum of proper divisors (its aliquot sum) s(n): 150632367
- 138469905 is an abundant number, because the sum of its proper divisors (150632367) is greater than itself. Its abundance is 12162462
Bases of 138469905
- Binary: 10000100000011100010000100012
- Hexadecimal: 0x840E211
- Base-36: 2AFW29
Squares and roots of 138469905
- 138469905 squared (1384699052) is 19173914590709025
- 138469905 cubed (1384699053) is 2655010131853592574392625
-
The
square root of 138469905 is 11767.3236124447 -
The
cube root of 138469905 is 517.3508076545
Scales and comparisons
How big is 138469905?- 138,469,905 seconds is equal to 4 years, 20 weeks, 6 days, 15 hours, 51 minutes, 45 seconds.
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To count from 1 to 138,469,905 would take you about six 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 138469905 cubic inches would be around 43.1 feet tall.
Recreational maths with 138469905
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