640000

640,000 is an even composite number composed of two prime numbers multiplied together.

What does the number 640000 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 55 divisors.

640000 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fifty-five divisors.

Prime factorization of 640000:

2¹⁰ × 5⁴

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5)

See below for interesting mathematical facts about the number 640000 from the Numbermatics database.

Names of 640000

Cardinal: 640000 can be written as Six hundred forty thousand.

Scientific notation

Scientific notation: 6.4 × 10⁵

Factors of 640000

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 14
Sum of prime factors: 7

Divisors of 640000

Number of divisors d(n): 55
Complete list of divisors:
1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1024 1250 1280 1600 2000 2500 2560 3200 4000 5000 5120 6400 8000 10000 12800 16000 20000 25600 32000 40000 64000 80000 128000 160000 320000 640000
Sum of all divisors σ(n): 1598707
Sum of proper divisors (its aliquot sum) s(n): 958707
640000 is an abundant number, because the sum of its proper divisors (958707) is greater than itself. Its abundance is 318707

Bases of 640000

Binary: 10011100010000000000₂
Hexadecimal: 0x9C400
Base-36: DPTS

Squares and roots of 640000

640000 squared (640000²) is 409600000000
640000 cubed (640000³) is 262144000000000000
640000 is a perfect square number. Its square root is 800
The cube root of 640000 is 86.1773876013

Scales and comparisons

How big is 640000?

640,000 seconds is equal to 1 week, 9 hours, 46 minutes, 40 seconds.
To count from 1 to 640,000 would take you about nine 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 640000 cubic inches would be around 7.2 feet tall.

Recreational maths with 640000

640000 backwards is 000046
640000 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 640000's digits is 10
More coming soon!

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The information we have on file for 640000 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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