398720

398,720 is an even composite number composed of four prime numbers multiplied together.

What does the number 398720 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 64 divisors.

398720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.

Prime factorization of 398720:

2⁷ × 5 × 7 × 89

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 89)

See below for interesting mathematical facts about the number 398720 from the Numbermatics database.

Names of 398720

Cardinal: 398720 can be written as Three hundred ninety-eight thousand, seven hundred twenty.

Scientific notation

Scientific notation: 3.9872 × 10⁵

Factors of 398720

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 10
Sum of prime factors: 103

Divisors of 398720

Number of divisors d(n): 64
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 89 112 128 140 160 178 224 280 320 356 445 448 560 623 640 712 890 896 1120 1246 1424 1780 2240 2492 2848 3115 3560 4480 4984 5696 6230 7120 9968 11392 12460 14240 19936 24920 28480 39872 49840 56960 79744 99680 199360 398720
Sum of all divisors σ(n): 1101600
Sum of proper divisors (its aliquot sum) s(n): 702880
398720 is an abundant number, because the sum of its proper divisors (702880) is greater than itself. Its abundance is 304160

Bases of 398720

Binary: 1100001010110000000₂
Hexadecimal: 0x61580
Base-36: 8JNK

Squares and roots of 398720

398720 squared (398720²) is 158977638400
398720 cubed (398720³) is 63387563982848000
The square root of 398720 is 631.4427923415
The cube root of 398720 is 73.6019533193

Scales and comparisons

How big is 398720?

398,720 seconds is equal to 4 days, 14 hours, 45 minutes, 20 seconds.
To count from 1 to 398,720 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 398720 cubic inches would be around 6.1 feet tall.

Recreational maths with 398720

398720 backwards is 027893
The number of decimal digits it has is: 6
The sum of 398720's digits is 29
More coming soon!

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The information we have on file for 398720 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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