28378640

28,378,640 is an even composite number composed of four prime numbers multiplied together.

What does the number 28378640 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

28378640 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 28378640:

2⁴ × 5 × 31 × 11443

(2 × 2 × 2 × 2 × 5 × 31 × 11443)

See below for interesting mathematical facts about the number 28378640 from the Numbermatics database.

Names of 28378640

Cardinal: 28378640 can be written as Twenty-eight million, three hundred seventy-eight thousand, six hundred forty.

Scientific notation

Scientific notation: 2.837864 × 10⁷

Factors of 28378640

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 11481

Divisors of 28378640

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 5 8 10 16 20 31 40 62 80 124 155 248 310 496 620 1240 2480 11443 22886 45772 57215 91544 114430 183088 228860 354733 457720 709466 915440 1418932 1773665 2837864 3547330 5675728 7094660 14189320 28378640
Sum of all divisors σ(n): 68114688
Sum of proper divisors (its aliquot sum) s(n): 39736048
28378640 is an abundant number, because the sum of its proper divisors (39736048) is greater than itself. Its abundance is 11357408

Bases of 28378640

Binary: 1101100010000011000010000₂
Hexadecimal: 0x1B10610
Base-36: GW93K

Squares and roots of 28378640

28378640 squared (28378640²) is 805347208249600
28378640 cubed (28378640³) is 22854658497920428544000
The square root of 28378640 is 5327.1605945381
The cube root of 28378640 is 305.0215518229

Scales and comparisons

How big is 28378640?

28,378,640 seconds is equal to 46 weeks, 6 days, 10 hours, 57 minutes, 20 seconds.
To count from 1 to 28,378,640 would take you about eighteen weeks!

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 28378640 cubic inches would be around 25.4 feet tall.

Recreational maths with 28378640

28378640 backwards is 04687382
The number of decimal digits it has is: 8
The sum of 28378640's digits is 38
More coming soon!

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The information we have on file for 28378640 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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