# 643072

## 643,072 is an even composite number composed of two prime numbers multiplied together.

What does the number 643072 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 26 divisors.

643072 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twenty-six divisors.

## Prime factorization of 643072:

### 212 × 157

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 157)

See below for interesting mathematical facts about the number 643072 from the Numbermatics database.

### Names of 643072

• Cardinal: 643072 can be written as Six hundred forty-three thousand and seventy-two.

### Scientific notation

• Scientific notation: 6.43072 × 105

### Factors of 643072

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 159

### Divisors of 643072

• Number of divisors d(n): 26
• Complete list of divisors:
• Sum of all divisors σ(n): 1294178
• Sum of proper divisors (its aliquot sum) s(n): 651106
• 643072 is an abundant number, because the sum of its proper divisors (651106) is greater than itself. Its abundance is 8034

### Bases of 643072

• Binary: 100111010000000000002
• Base-36: DS74

### Squares and roots of 643072

• 643072 squared (6430722) is 413541597184
• 643072 cubed (6430723) is 265937021984309248
• The square root of 643072 is 801.9177015131
• The cube root of 643072 is 86.3150513937

### Scales and comparisons

How big is 643072?
• 643,072 seconds is equal to 1 week, 10 hours, 37 minutes, 52 seconds.
• To count from 1 to 643,072 would take you about ten 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 643072 cubic inches would be around 7.2 feet tall.

### Recreational maths with 643072

• 643072 backwards is 270346
• The number of decimal digits it has is: 6
• The sum of 643072's digits is 22
• More coming soon!