155840

155,840 is an even composite number composed of three prime numbers multiplied together.

What does the number 155840 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 28 divisors.

155840 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-eight divisors.

Prime factorization of 155840:

2⁶ × 5 × 487

(2 × 2 × 2 × 2 × 2 × 2 × 5 × 487)

See below for interesting mathematical facts about the number 155840 from the Numbermatics database.

Names of 155840

Cardinal: 155840 can be written as One hundred fifty-five thousand, eight hundred forty.

Scientific notation

Scientific notation: 1.5584 × 10⁵

Factors of 155840

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 494

Divisors of 155840

Number of divisors d(n): 28
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 80 160 320 487 974 1948 2435 3896 4870 7792 9740 15584 19480 31168 38960 77920 155840
Sum of all divisors σ(n): 371856
Sum of proper divisors (its aliquot sum) s(n): 216016
155840 is an abundant number, because the sum of its proper divisors (216016) is greater than itself. Its abundance is 60176

Bases of 155840

Binary: 100110000011000000₂
Hexadecimal: 0x260C0
Base-36: 3C8W

Squares and roots of 155840

155840 squared (155840²) is 24286105600
155840 cubed (155840³) is 3784746696704000
The square root of 155840 is 394.7657533273
The cube root of 155840 is 53.8137156795

Scales and comparisons

How big is 155840?

155,840 seconds is equal to 1 day, 19 hours, 17 minutes, 20 seconds.
To count from 1 to 155,840 would take you about nineteen hours.

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 155840 cubic inches would be around 4.5 feet tall.

Recreational maths with 155840

155840 backwards is 048551
The number of decimal digits it has is: 6
The sum of 155840's digits is 23
More coming soon!

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The information we have on file for 155840 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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