138428973920
138,428,973,920 is an even composite number composed of four prime numbers multiplied together.
138428973920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 138428973920:
25 × 5 × 232 × 1635503
(2 × 2 × 2 × 2 × 2 × 5 × 23 × 23 × 1635503)See below for interesting mathematical facts about the number 138428973920 from the Numbermatics database.
Names of 138428973920
- Cardinal: 138428973920 can be written as One hundred thirty-eight billion, four hundred twenty-eight million, nine hundred seventy-three thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.3842897392 × 1011
Factors of 138428973920
Divisors of 138428973920
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 8 10 16 20 23 32 40 46 80 92 115 160 184 230 368 460 529 736 920 1058 1840 2116 2645 3680 4232 5290 8464 10580 16928 21160 42320 84640 1635503 3271006 6542012 8177515 13084024 16355030 26168048 32710060 37616569 52336096 65420120 75233138 130840240 150466276 188082845 261680480 300932552 376165690 601865104 752331380 865181087 1203730208 1504662760 1730362174 3009325520 3460724348 4325905435 6018651040 6921448696 8651810870 13842897392 17303621740 27685794784 34607243480 69214486960 138428973920
- Sum of all divisors σ(n): 341875943136
- Sum of proper divisors (its aliquot sum) s(n): 203446969216
- 138428973920 is an abundant number, because the sum of its proper divisors (203446969216) is greater than itself. Its abundance is 65017995296
Bases of 138428973920
- Binary: 100000001110110000001010000011011000002
- Hexadecimal: 0x203B028360
- Base-36: 1RLD1BVK
Squares and roots of 138428973920
- 138428973920 squared (1384289739202) is 19162580820544040166400
- 138428973920 cubed (1384289739203) is 2652656400646983136406018060288000
-
The
square root of 138428973920 is 372060.4439066319 -
The
cube root of 138428973920 is 5172.9982710835
Scales and comparisons
How big is 138428973920?- 138,428,973,920 seconds is equal to 4,401 years, 31 weeks, 6 days, 4 hours, 45 minutes, 20 seconds.
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To count from 1 to 138,428,973,920 would take you about eight thousand, eight hundred three 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 138428973920 cubic inches would be around 431.1 feet tall.
Recreational maths with 138428973920
- 138428973920 backwards is 029379824831
- The number of decimal digits it has is: 12
- The sum of 138428973920's digits is 56
- More coming soon!
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