217990

217,990 is an even composite number composed of three prime numbers multiplied together.

What does the number 217990 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

217990 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 217990:

2 × 5 × 21799

See below for interesting mathematical facts about the number 217990 from the Numbermatics database.

Names of 217990

Cardinal: 217990 can be written as Two hundred seventeen thousand, nine hundred ninety.

Scientific notation

Scientific notation: 2.1799 × 10⁵

Factors of 217990

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 21806

Divisors of 217990

Number of divisors d(n): 8
Complete list of divisors:
1 2 5 10 21799 43598 108995 217990
Sum of all divisors σ(n): 392400
Sum of proper divisors (its aliquot sum) s(n): 174410
217990 is a deficient number, because the sum of its proper divisors (174410) is less than itself. Its deficiency is 43580

Bases of 217990

Binary: 110101001110000110₂
Hexadecimal: 0x35386
Base-36: 4O7A

Squares and roots of 217990

217990 squared (217990²) is 47519640100
217990 cubed (217990³) is 10358806345399000
The square root of 217990 is 466.8939922509
The cube root of 217990 is 60.1836962799

Scales and comparisons

How big is 217990?

217,990 seconds is equal to 2 days, 12 hours, 33 minutes, 10 seconds.
To count from 1 to 217,990 would take you about two days.

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 217990 cubic inches would be around 5 feet tall.

Recreational maths with 217990

217990 backwards is 099712
The number of decimal digits it has is: 6
The sum of 217990's digits is 28
More coming soon!

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The information we have on file for 217990 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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