128340

128,340 is an even composite number composed of five prime numbers multiplied together.

What does the number 128340 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.

128340 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.

Prime factorization of 128340:

2² × 3² × 5 × 23 × 31

(2 × 2 × 3 × 3 × 5 × 23 × 31)

See below for interesting mathematical facts about the number 128340 from the Numbermatics database.

Names of 128340

Cardinal: 128340 can be written as One hundred twenty-eight thousand, three hundred forty.

Scientific notation

Scientific notation: 1.2834 × 10⁵

Factors of 128340

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 7
Sum of prime factors: 64

Divisors of 128340

Number of divisors d(n): 72
Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 23 30 31 36 45 46 60 62 69 90 92 93 115 124 138 155 180 186 207 230 276 279 310 345 372 414 460 465 558 620 690 713 828 930 1035 1116 1380 1395 1426 1860 2070 2139 2790 2852 3565 4140 4278 5580 6417 7130 8556 10695 12834 14260 21390 25668 32085 42780 64170 128340
Sum of all divisors σ(n): 419328
Sum of proper divisors (its aliquot sum) s(n): 290988
128340 is an abundant number, because the sum of its proper divisors (290988) is greater than itself. Its abundance is 162648

Bases of 128340

Binary: 11111010101010100₂
Hexadecimal: 0x1F554
Base-36: 2R10

Squares and roots of 128340

128340 squared (128340²) is 16471155600
128340 cubed (128340³) is 2113908109704000
The square root of 128340 is 358.2457257247
The cube root of 128340 is 50.4414247487

Scales and comparisons

How big is 128340?

128,340 seconds is equal to 1 day, 11 hours, 39 minutes.
To count from 1 to 128,340 would take you about eleven 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 128340 cubic inches would be around 4.2 feet tall.

Recreational maths with 128340

128340 backwards is 043821
128340 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 128340's digits is 18
More coming soon!

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The information we have on file for 128340 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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