641299728

641,299,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 641299728 look like?

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

641299728 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 641299728:

2⁴ × 3 × 31 × 430981

(2 × 2 × 2 × 2 × 3 × 31 × 430981)

See below for interesting mathematical facts about the number 641299728 from the Numbermatics database.

Names of 641299728

Cardinal: 641299728 can be written as Six hundred forty-one million, two hundred ninety-nine thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 6.41299728 × 10⁸

Factors of 641299728

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 431017

Divisors of 641299728

Number of divisors d(n): 40
Complete list of divisors:
1 2 3 4 6 8 12 16 24 31 48 62 93 124 186 248 372 496 744 1488 430981 861962 1292943 1723924 2585886 3447848 5171772 6895696 10343544 13360411 20687088 26720822 40081233 53441644 80162466 106883288 160324932 213766576 320649864 641299728
Sum of all divisors σ(n): 1710136576
Sum of proper divisors (its aliquot sum) s(n): 1068836848
641299728 is an abundant number, because the sum of its proper divisors (1068836848) is greater than itself. Its abundance is 427537120

Bases of 641299728

Binary: 100110001110010111010100010000₂
Hexadecimal: 0x26397510
Base-36: ALTA1C

Squares and roots of 641299728

641299728 squared (641299728²) is 411265341132873984
641299728 cubed (641299728³) is 263744351404339297797476352
The square root of 641299728 is 25323.8963826659
The cube root of 641299728 is 862.3568521937

Scales and comparisons

How big is 641299728?

641,299,728 seconds is equal to 20 years, 20 weeks, 2 days, 10 hours, 48 minutes, 48 seconds.
To count from 1 to 641,299,728 would take you about thirty years!

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 641299728 cubic inches would be around 71.9 feet tall.

Recreational maths with 641299728

641299728 backwards is 827992146
641299728 is a Harshad number.
The number of decimal digits it has is: 9
The sum of 641299728's digits is 48
More coming soon!

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The information we have on file for 641299728 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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