138421872
138,421,872 is an even composite number composed of four prime numbers multiplied together.
138421872 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred fifty divisors.
Prime factorization of 138421872:
24 × 34 × 292 × 127
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 29 × 29 × 127)See below for interesting mathematical facts about the number 138421872 from the Numbermatics database.
Names of 138421872
- Cardinal: 138421872 can be written as One hundred thirty-eight million, four hundred twenty-one thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 1.38421872 × 108
Factors of 138421872
Divisors of 138421872
- Number of divisors d(n): 150
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 27 29 36 48 54 58 72 81 87 108 116 127 144 162 174 216 232 254 261 324 348 381 432 464 508 522 648 696 762 783 841 1016 1044 1143 1296 1392 1524 1566 1682 2032 2088 2286 2349 2523 3048 3132 3364 3429 3683 4176 4572 4698 5046 6096 6264 6728 6858 7366 7569 9144 9396 10092 10287 11049 12528 13456 13716 14732 15138 18288 18792 20184 20574 22098 22707 27432 29464 30276 33147 37584 40368 41148 44196 45414 54864 58928 60552 66294 68121 82296 88392 90828 99441 106807 121104 132588 136242 164592 176784 181656 198882 213614 265176 272484 298323 320421 363312 397764 427228 530352 544968 596646 640842 795528 854456 961263 1089936 1193292 1281684 1591056 1708912 1922526 2386584 2563368 2883789 3845052 4773168 5126736 5767578 7690104 8651367 11535156 15380208 17302734 23070312 34605468 46140624 69210936 138421872
- Sum of all divisors σ(n): 418191488
- Sum of proper divisors (its aliquot sum) s(n): 279769616
- 138421872 is an abundant number, because the sum of its proper divisors (279769616) is greater than itself. Its abundance is 141347744
Bases of 138421872
- Binary: 10000100000000100110011100002
- Hexadecimal: 0x8402670
- Base-36: 2AEV00
Squares and roots of 138421872
- 138421872 squared (1384218722) is 19160614647984384
- 138421872 cubed (1384218723) is 2652248148244619460046848
-
The
square root of 138421872 is 11765.2824870465 -
The
cube root of 138421872 is 517.2909804903
Scales and comparisons
How big is 138421872?- 138,421,872 seconds is equal to 4 years, 20 weeks, 6 days, 2 hours, 31 minutes, 12 seconds.
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To count from 1 to 138,421,872 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 138421872 cubic inches would be around 43.1 feet tall.
Recreational maths with 138421872
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