21309139

21,309,139 is an odd composite number composed of two prime numbers multiplied together.

What does the number 21309139 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

21309139 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 21309139:

157 × 135727

See below for interesting mathematical facts about the number 21309139 from the Numbermatics database.

Names of 21309139

Cardinal: 21309139 can be written as Twenty-one million, three hundred nine thousand, one hundred thirty-nine.

Scientific notation

Scientific notation: 2.1309139 × 10⁷

Factors of 21309139

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 135884

Divisors of 21309139

Number of divisors d(n): 4
Complete list of divisors:
1 157 135727 21309139
Sum of all divisors σ(n): 21445024
Sum of proper divisors (its aliquot sum) s(n): 135885
21309139 is a deficient number, because the sum of its proper divisors (135885) is less than itself. Its deficiency is 21173254

Bases of 21309139

Binary: 1010001010010011011010011₂
Hexadecimal: 0x14526D3
Base-36: COQ8J

Squares and roots of 21309139

21309139 squared (21309139²) is 454079404921321
21309139 cubed (21309139³) is 9676041156505713252619
The square root of 21309139 is 4616.1822970935
The cube root of 21309139 is 277.2396237433

Scales and comparisons

How big is 21309139?

21,309,139 seconds is equal to 35 weeks, 1 day, 15 hours, 12 minutes, 19 seconds.
To count from 1 to 21,309,139 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 21309139 cubic inches would be around 23.1 feet tall.

Recreational maths with 21309139

21309139 backwards is 93190312
The number of decimal digits it has is: 8
The sum of 21309139's digits is 28
More coming soon!

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The information we have on file for 21309139 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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