820428

820,428 is an even composite number composed of four prime numbers multiplied together.

What does the number 820428 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

820428 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 820428:

2² × 3 × 7 × 9767

(2 × 2 × 3 × 7 × 9767)

See below for interesting mathematical facts about the number 820428 from the Numbermatics database.

Names of 820428

Cardinal: 820428 can be written as Eight hundred twenty thousand, four hundred twenty-eight.

Scientific notation

Scientific notation: 8.20428 × 10⁵

Factors of 820428

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 9779

Divisors of 820428

Number of divisors d(n): 24
Complete list of divisors:
1 2 3 4 6 7 12 14 21 28 42 84 9767 19534 29301 39068 58602 68369 117204 136738 205107 273476 410214 820428
Sum of all divisors σ(n): 2188032
Sum of proper divisors (its aliquot sum) s(n): 1367604
820428 is an abundant number, because the sum of its proper divisors (1367604) is greater than itself. Its abundance is 547176

Bases of 820428

Binary: 11001000010011001100₂
Hexadecimal: 0xC84CC
Base-36: HL1O

Squares and roots of 820428

820428 squared (820428²) is 673102103184
820428 cubed (820428³) is 552231812311042752
The square root of 820428 is 905.7748064503
The cube root of 820428 is 93.6152981059

Scales and comparisons

How big is 820428?

820,428 seconds is equal to 1 week, 2 days, 11 hours, 53 minutes, 48 seconds.
To count from 1 to 820,428 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 820428 cubic inches would be around 7.8 feet tall.

Recreational maths with 820428

820428 backwards is 824028
The number of decimal digits it has is: 6
The sum of 820428's digits is 24
More coming soon!

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The information we have on file for 820428 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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