138954690
138,954,690 is an even composite number composed of five prime numbers multiplied together.
138954690 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 138954690:
2 × 36 × 5 × 72 × 389
(2 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 7 × 389)See below for interesting mathematical facts about the number 138954690 from the Numbermatics database.
Names of 138954690
- Cardinal: 138954690 can be written as One hundred thirty-eight million, nine hundred fifty-four thousand, six hundred ninety.
Scientific notation
- Scientific notation: 1.3895469 × 108
Factors of 138954690
Divisors of 138954690
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 49 54 63 70 81 90 98 105 126 135 147 162 189 210 243 245 270 294 315 378 389 405 441 486 490 567 630 729 735 778 810 882 945 1134 1167 1215 1323 1458 1470 1701 1890 1945 2205 2334 2430 2646 2723 2835 3402 3501 3645 3890 3969 4410 5103 5446 5670 5835 6615 7002 7290 7938 8169 8505 10206 10503 11670 11907 13230 13615 16338 17010 17505 19061 19845 21006 23814 24507 25515 27230 31509 35010 35721 38122 39690 40845 49014 51030 52515 57183 59535 63018 71442 73521 81690 94527 95305 105030 114366 119070 122535 147042 157545 171549 178605 189054 190610 220563 245070 283581 285915 315090 343098 357210 367605 441126 472635 514647 567162 571830 661689 735210 857745 945270 1029294 1102815 1323378 1417905 1543941 1715490 1985067 2205630 2573235 2835810 3087882 3308445 3970134 4631823 5146470 6616890 7719705 9263646 9925335 13895469 15439410 19850670 23159115 27790938 46318230 69477345 138954690
- Sum of all divisors σ(n): 437353020
- Sum of proper divisors (its aliquot sum) s(n): 298398330
- 138954690 is an abundant number, because the sum of its proper divisors (298398330) is greater than itself. Its abundance is 159443640
Bases of 138954690
- Binary: 10000100100001000111110000102
- Hexadecimal: 0x84847C2
- Base-36: 2AQA4I
Squares and roots of 138954690
- 138954690 squared (1389546902) is 19308405872996100
- 138954690 cubed (1389546903) is 2682993552476352446709000
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The
square root of 138954690 is 11787.9043939119 -
The
cube root of 138954690 is 517.9538551541
Scales and comparisons
How big is 138954690?- 138,954,690 seconds is equal to 4 years, 21 weeks, 5 days, 6 hours, 31 minutes, 30 seconds.
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To count from 1 to 138,954,690 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 138954690 cubic inches would be around 43.2 feet tall.
Recreational maths with 138954690
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