138831840
138,831,840 is an even composite number composed of five prime numbers multiplied together.
138831840 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 138831840:
25 × 33 × 5 × 7 × 4591
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 7 × 4591)See below for interesting mathematical facts about the number 138831840 from the Numbermatics database.
Names of 138831840
- Cardinal: 138831840 can be written as One hundred thirty-eight million, eight hundred thirty-one thousand, eight hundred forty.
Scientific notation
- Scientific notation: 1.3883184 × 108
Factors of 138831840
Divisors of 138831840
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 54 56 60 63 70 72 80 84 90 96 105 108 112 120 126 135 140 144 160 168 180 189 210 216 224 240 252 270 280 288 315 336 360 378 420 432 480 504 540 560 630 672 720 756 840 864 945 1008 1080 1120 1260 1440 1512 1680 1890 2016 2160 2520 3024 3360 3780 4320 4591 5040 6048 7560 9182 10080 13773 15120 18364 22955 27546 30240 32137 36728 41319 45910 55092 64274 68865 73456 82638 91820 96411 110184 123957 128548 137730 146912 160685 165276 183640 192822 206595 220368 247914 257096 275460 289233 321370 330552 367280 385644 413190 440736 482055 495828 514192 550920 578466 619785 642740 661104 734560 771288 826380 867699 964110 991656 1028384 1101840 1156932 1239570 1285480 1322208 1446165 1542576 1652760 1735398 1928220 1983312 2203680 2313864 2479140 2570960 2892330 3085152 3305520 3470796 3856440 3966624 4338495 4627728 4958280 5141920 5784660 6611040 6941592 7712880 8676990 9255456 9916560 11569320 13883184 15425760 17353980 19833120 23138640 27766368 34707960 46277280 69415920 138831840
- Sum of all divisors σ(n): 555448320
- Sum of proper divisors (its aliquot sum) s(n): 416616480
- 138831840 is an abundant number, because the sum of its proper divisors (416616480) is greater than itself. Its abundance is 277784640
Bases of 138831840
- Binary: 10000100011001100111111000002
- Hexadecimal: 0x84667E0
- Base-36: 2ANNC0
Squares and roots of 138831840
- 138831840 squared (1388318402) is 19274279797785600
- 138831840 cubed (1388318403) is 2675883729001402773504000
-
The
square root of 138831840 is 11782.6923918091 -
The
cube root of 138831840 is 517.8011689503
Scales and comparisons
How big is 138831840?- 138,831,840 seconds is equal to 4 years, 21 weeks, 3 days, 20 hours, 24 minutes.
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To count from 1 to 138,831,840 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 138831840 cubic inches would be around 43.2 feet tall.
Recreational maths with 138831840
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