21428001

21,428,001 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21428001 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21428001 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21428001:

3² × 7 × 340127

(3 × 3 × 7 × 340127)

See below for interesting mathematical facts about the number 21428001 from the Numbermatics database.

Names of 21428001

Cardinal: 21428001 can be written as Twenty-one million, four hundred twenty-eight thousand and one.

Scientific notation

Scientific notation: 2.1428001 × 10⁷

Factors of 21428001

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 340137

Divisors of 21428001

Number of divisors d(n): 12
Complete list of divisors:
1 3 7 9 21 63 340127 1020381 2380889 3061143 7142667 21428001
Sum of all divisors σ(n): 35373312
Sum of proper divisors (its aliquot sum) s(n): 13945311
21428001 is a deficient number, because the sum of its proper divisors (13945311) is less than itself. Its deficiency is 7482690

Bases of 21428001

Binary: 1010001101111011100100001₂
Hexadecimal: 0x146F721
Base-36: CR9Y9

Squares and roots of 21428001

21428001 squared (21428001²) is 459159226856001
21428001 cubed (21428001³) is 9838864372229616284001
The square root of 21428001 is 4629.0388851251
The cube root of 21428001 is 277.7541474951

Scales and comparisons

How big is 21428001?

21,428,001 seconds is equal to 35 weeks, 3 days, 13 minutes, 21 seconds.
To count from 1 to 21,428,001 would take you about twenty 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 21428001 cubic inches would be around 23.1 feet tall.

Recreational maths with 21428001

21428001 backwards is 10082412
The number of decimal digits it has is: 8
The sum of 21428001's digits is 18
More coming soon!

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The information we have on file for 21428001 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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