397840

397,840 is an even composite number composed of three prime numbers multiplied together.

What does the number 397840 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

397840 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 397840:

2⁴ × 5 × 4973

(2 × 2 × 2 × 2 × 5 × 4973)

See below for interesting mathematical facts about the number 397840 from the Numbermatics database.

Names of 397840

Cardinal: 397840 can be written as Three hundred ninety-seven thousand, eight hundred forty.

Scientific notation

Scientific notation: 3.9784 × 10⁵

Factors of 397840

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 4980

Divisors of 397840

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 5 8 10 16 20 40 80 4973 9946 19892 24865 39784 49730 79568 99460 198920 397840
Sum of all divisors σ(n): 925164
Sum of proper divisors (its aliquot sum) s(n): 527324
397840 is an abundant number, because the sum of its proper divisors (527324) is greater than itself. Its abundance is 129484

Bases of 397840

Binary: 1100001001000010000₂
Hexadecimal: 0x61210
Base-36: 8IZ4

Squares and roots of 397840

397840 squared (397840²) is 158276665600
397840 cubed (397840³) is 62968788642304000
The square root of 397840 is 630.7455905513
The cube root of 397840 is 73.5477653949

Scales and comparisons

How big is 397840?

397,840 seconds is equal to 4 days, 14 hours, 30 minutes, 40 seconds.
To count from 1 to 397,840 would take you about four 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 397840 cubic inches would be around 6.1 feet tall.

Recreational maths with 397840

397840 backwards is 048793
The number of decimal digits it has is: 6
The sum of 397840's digits is 31
More coming soon!

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The information we have on file for 397840 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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