6420

6,420 is an even composite number composed of four prime numbers multiplied together.

What does the number 6420 look like?

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

6420 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 6420:

2² × 3 × 5 × 107

(2 × 2 × 3 × 5 × 107)

See below for interesting mathematical facts about the number 6420 from the Numbermatics database.

Names of 6420

Cardinal: 6420 can be written as Six thousand, four hundred twenty.

Scientific notation

Scientific notation: 6.42 × 10³

Factors of 6420

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 117

Divisors of 6420

Number of divisors d(n): 24
Complete list of divisors:
1 2 3 4 5 6 10 12 15 20 30 60 107 214 321 428 535 642 1070 1284 1605 2140 3210 6420
Sum of all divisors σ(n): 18144
Sum of proper divisors (its aliquot sum) s(n): 11724
6420 is an abundant number, because the sum of its proper divisors (11724) is greater than itself. Its abundance is 5304

Bases of 6420

Binary: 1100100010100₂
Hexadecimal: 0x1914
Base-36: 4YC

Squares and roots of 6420

6420 squared (6420²) is 41216400
6420 cubed (6420³) is 264609288000
The square root of 6420 is 80.1249024959
The cube root of 6420 is 18.5856751771

Scales and comparisons

How big is 6420?

6,420 seconds is equal to 1 hour, 47 minutes.
To count from 1 to 6,420 would take you about forty-seven minutes.

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 6420 cubic inches would be around 1.5 feet tall.

Recreational maths with 6420

6420 backwards is 0246
6420 is a Harshad number.
The number of decimal digits it has is: 4
The sum of 6420's digits is 12
More coming soon!

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The information we have on file for 6420 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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