128800

128,800 is an even composite number composed of four prime numbers multiplied together.

What does the number 128800 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.

128800 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 128800:

25 × 52 × 7 × 23

(2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 23)

See below for interesting mathematical facts about the number 128800 from the Numbermatics database.

Names of 128800

• Cardinal: 128800 can be written as One hundred twenty-eight thousand, eight hundred.

Scientific notation

• Scientific notation: 1.288 × 105

Factors of 128800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 37

Divisors of 128800

• Number of divisors d(n): 72
• Complete list of divisors:
• Sum of all divisors σ(n): 374976
• Sum of proper divisors (its aliquot sum) s(n): 246176
• 128800 is an abundant number, because the sum of its proper divisors (246176) is greater than itself. Its abundance is 117376

Bases of 128800

• Binary: 111110111001000002
• Base-36: 2RDS

Squares and roots of 128800

• 128800 squared (1288002) is 16589440000
• 128800 cubed (1288003) is 2136719872000000
• The square root of 128800 is 358.8871688985
• The cube root of 128800 is 50.5016174367

Scales and comparisons

How big is 128800?
• 128,800 seconds is equal to 11 hours, 46 minutes, 40 seconds.
• To count from 1 to 128,800 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 128800 cubic inches would be around 4.2 feet tall.

Recreational maths with 128800

• 128800 backwards is 008821
• The number of decimal digits it has is: 6
• The sum of 128800's digits is 19
• More coming soon!

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