861220

861,220 is an even composite number composed of four prime numbers multiplied together.

What does the number 861220 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 36 divisors.

861220 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 861220:

2² × 5 × 17² × 149

(2 × 2 × 5 × 17 × 17 × 149)

See below for interesting mathematical facts about the number 861220 from the Numbermatics database.

Names of 861220

Cardinal: 861220 can be written as Eight hundred sixty-one thousand, two hundred twenty.

Scientific notation

Scientific notation: 8.6122 × 10⁵

Factors of 861220

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 173

Divisors of 861220

Number of divisors d(n): 36
Complete list of divisors:
1 2 4 5 10 17 20 34 68 85 149 170 289 298 340 578 596 745 1156 1445 1490 2533 2890 2980 5066 5780 10132 12665 25330 43061 50660 86122 172244 215305 430610 861220
Sum of all divisors σ(n): 1934100
Sum of proper divisors (its aliquot sum) s(n): 1072880
861220 is an abundant number, because the sum of its proper divisors (1072880) is greater than itself. Its abundance is 211660

Bases of 861220

Binary: 11010010010000100100₂
Hexadecimal: 0xD2424
Base-36: IGIS

Squares and roots of 861220

861220 squared (861220²) is 741699888400
861220 cubed (861220³) is 638766777887848000
The square root of 861220 is 928.0193963491
The cube root of 861220 is 95.1418011631

Scales and comparisons

How big is 861220?

861,220 seconds is equal to 1 week, 2 days, 23 hours, 13 minutes, 40 seconds.
To count from 1 to 861,220 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 861220 cubic inches would be around 7.9 feet tall.

Recreational maths with 861220

861220 backwards is 022168
The number of decimal digits it has is: 6
The sum of 861220's digits is 19
More coming soon!

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The information we have on file for 861220 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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