# 243840

## 243,840 is an even composite number composed of four prime numbers multiplied together.

What does the number 243840 look like?

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

243840 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 243840:

### 27 × 3 × 5 × 127

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 127)

See below for interesting mathematical facts about the number 243840 from the Numbermatics database.

### Names of 243840

• Cardinal: 243840 can be written as Two hundred forty-three thousand, eight hundred forty.

### Scientific notation

• Scientific notation: 2.4384 × 105

### Factors of 243840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 137

### Divisors of 243840

• Number of divisors d(n): 64
• Complete list of divisors:
• Sum of all divisors σ(n): 783360
• Sum of proper divisors (its aliquot sum) s(n): 539520
• 243840 is an abundant number, because the sum of its proper divisors (539520) is greater than itself. Its abundance is 295680

### Bases of 243840

• Binary: 1110111000100000002
• Base-36: 585C

### Squares and roots of 243840

• 243840 squared (2438402) is 59457945600
• 243840 cubed (2438403) is 14498225455104000
• The square root of 243840 is 493.8015795843
• The cube root of 243840 is 62.4743361299

### Scales and comparisons

How big is 243840?
• 243,840 seconds is equal to 2 days, 19 hours, 44 minutes.
• To count from 1 to 243,840 would take you about two 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 243840 cubic inches would be around 5.2 feet tall.

### Recreational maths with 243840

• 243840 backwards is 048342
• The number of decimal digits it has is: 6
• The sum of 243840's digits is 21
• More coming soon!