78400

78,400 is an even composite number composed of three prime numbers multiplied together.

What does the number 78400 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 63 divisors.

78400 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixty-three divisors.

Prime factorization of 78400:

26 × 52 × 72

(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 7)

See below for interesting mathematical facts about the number 78400 from the Numbermatics database.


Names of 78400

  • Cardinal: 78400 can be written as Seventy-eight thousand, four hundred.

Scientific notation

  • Scientific notation: 7.84 × 104

Factors of 78400

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 10
  • Sum of prime factors: 14

Divisors of 78400

Bases of 78400

  • Binary: 100110010010000002
  • Hexadecimal: 0x13240
  • Base-36: 1OHS

Squares and roots of 78400

  • 78400 squared (784002) is 6146560000
  • 78400 cubed (784003) is 481890304000000
  • 78400 is a perfect square number. Its square root is 280
  • The cube root of 78400 is 42.7994992225

Scales and comparisons

How big is 78400?
  • 78,400 seconds is equal to 21 hours, 46 minutes, 40 seconds.
  • To count from 1 to 78,400 would take you about twenty-one 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 78400 cubic inches would be around 3.6 feet tall.

Recreational maths with 78400

  • 78400 backwards is 00487
  • The number of decimal digits it has is: 5
  • The sum of 78400's digits is 19
  • More coming soon!

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

Cite this page

MLA style:
"Number 78400 - Facts about the integer". Numbermatics.com. 2020. Web. 1 June 2020.

APA style:
Numbermatics. (2020). Number 78400 - Facts about the integer. Retrieved 1 June 2020, from https://numbermatics.com/n/78400/

Chicago style:
Numbermatics. 2020. "Number 78400 - Facts about the integer". https://numbermatics.com/n/78400/

The information we have on file for 78400 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!

Keywords: Divisors of 78400, math, Factors of 78400, curriculum, school, college, exams, university, Prime factorization of 78400, STEM, science, technology, engineering, physics, economics, calculator, seventy-eight thousand, four hundred.