31428

31,428 is an even composite number composed of three prime numbers multiplied together.

What does the number 31428 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 30 divisors.

31428 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty divisors.

Prime factorization of 31428:

2² × 3⁴ × 97

(2 × 2 × 3 × 3 × 3 × 3 × 97)

See below for interesting mathematical facts about the number 31428 from the Numbermatics database.

Names of 31428

Cardinal: 31428 can be written as Thirty-one thousand, four hundred twenty-eight.

Scientific notation

Scientific notation: 3.1428 × 10⁴

Factors of 31428

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 102

Divisors of 31428

Number of divisors d(n): 30
Complete list of divisors:
1 2 3 4 6 9 12 18 27 36 54 81 97 108 162 194 291 324 388 582 873 1164 1746 2619 3492 5238 7857 10476 15714 31428
Sum of all divisors σ(n): 83006
Sum of proper divisors (its aliquot sum) s(n): 51578
31428 is an abundant number, because the sum of its proper divisors (51578) is greater than itself. Its abundance is 20150

Bases of 31428

Binary: 111101011000100₂
Hexadecimal: 0x7AC4
Base-36: O90

Squares and roots of 31428

31428 squared (31428²) is 987719184
31428 cubed (31428³) is 31042038514752
The square root of 31428 is 177.2794404323
The cube root of 31428 is 31.5577173095

Scales and comparisons

How big is 31428?

31,428 seconds is equal to 8 hours, 43 minutes, 48 seconds.
To count from 1 to 31,428 would take you about eight hours.

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 31428 cubic inches would be around 2.6 feet tall.

Recreational maths with 31428

31428 backwards is 82413
31428 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 31428's digits is 18
More coming soon!

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The information we have on file for 31428 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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