21290140

21,290,140 is an even composite number composed of three prime numbers multiplied together.

What does the number 21290140 look like?

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

21290140 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21290140:

2² × 5 × 1064507

(2 × 2 × 5 × 1064507)

See below for interesting mathematical facts about the number 21290140 from the Numbermatics database.

Names of 21290140

Cardinal: 21290140 can be written as Twenty-one million, two hundred ninety thousand, one hundred forty.

Scientific notation

Scientific notation: 2.129014 × 10⁷

Factors of 21290140

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 1064514

Divisors of 21290140

Number of divisors d(n): 12
Complete list of divisors:
1 2 4 5 10 20 1064507 2129014 4258028 5322535 10645070 21290140
Sum of all divisors σ(n): 44709336
Sum of proper divisors (its aliquot sum) s(n): 23419196
21290140 is an abundant number, because the sum of its proper divisors (23419196) is greater than itself. Its abundance is 2129056

Bases of 21290140

Binary: 1010001001101110010011100₂
Hexadecimal: 0x144DC9C
Base-36: COBKS

Squares and roots of 21290140

21290140 squared (21290140²) is 453270061219600
21290140 cubed (21290140³) is 9650183061173854744000
The square root of 21290140 is 4614.1239688591
The cube root of 21290140 is 277.1572046179

Scales and comparisons

How big is 21290140?

21,290,140 seconds is equal to 35 weeks, 1 day, 9 hours, 55 minutes, 40 seconds.
To count from 1 to 21,290,140 would take you about five 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 21290140 cubic inches would be around 23.1 feet tall.

Recreational maths with 21290140

21290140 backwards is 04109212
The number of decimal digits it has is: 8
The sum of 21290140's digits is 19
More coming soon!

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The information we have on file for 21290140 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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