138236440
138,236,440 is an even composite number composed of six prime numbers multiplied together.
138236440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 138236440:
23 × 5 × 23 × 31 × 37 × 131
(2 × 2 × 2 × 5 × 23 × 31 × 37 × 131)See below for interesting mathematical facts about the number 138236440 from the Numbermatics database.
Names of 138236440
- Cardinal: 138236440 can be written as One hundred thirty-eight million, two hundred thirty-six thousand, four hundred forty.
Scientific notation
- Scientific notation: 1.3823644 × 108
Factors of 138236440
Divisors of 138236440
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 5 8 10 20 23 31 37 40 46 62 74 92 115 124 131 148 155 184 185 230 248 262 296 310 370 460 524 620 655 713 740 851 920 1048 1147 1240 1310 1426 1480 1702 2294 2620 2852 3013 3404 3565 4061 4255 4588 4847 5240 5704 5735 6026 6808 7130 8122 8510 9176 9694 11470 12052 14260 15065 16244 17020 19388 20305 22940 24104 24235 26381 28520 30130 32488 34040 38776 40610 45880 48470 52762 60260 81220 93403 96940 105524 111481 120520 131905 150257 162440 186806 193880 211048 222962 263810 300514 373612 445924 467015 527620 557405 601028 747224 751285 891848 934030 1055240 1114810 1202056 1502570 1868060 2229620 3005140 3455911 3736120 4459240 6010280 6911822 13823644 17279555 27647288 34559110 69118220 138236440
- Sum of all divisors σ(n): 346705920
- Sum of proper divisors (its aliquot sum) s(n): 208469480
- 138236440 is an abundant number, because the sum of its proper divisors (208469480) is greater than itself. Its abundance is 70233040
Bases of 138236440
- Binary: 10000011110101010010000110002
- Hexadecimal: 0x83D5218
- Base-36: 2AAVX4
Squares and roots of 138236440
- 138236440 squared (1382364402) is 19109313343873600
- 138236440 cubed (1382364403) is 2641603447501582273984000
-
The
square root of 138236440 is 11757.3993723101 -
The
cube root of 138236440 is 517.0598870351
Scales and comparisons
How big is 138236440?- 138,236,440 seconds is equal to 4 years, 20 weeks, 3 days, 23 hours, 40 seconds.
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To count from 1 to 138,236,440 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 138236440 cubic inches would be around 43.1 feet tall.
Recreational maths with 138236440
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