# 30840

## 30,840 is an even composite number composed of four prime numbers multiplied together.

What does the number 30840 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

30840 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

## Prime factorization of 30840:

### 23 × 3 × 5 × 257

(2 × 2 × 2 × 3 × 5 × 257)

See below for interesting mathematical facts about the number 30840 from the Numbermatics database.

### Names of 30840

• Cardinal: 30840 can be written as Thirty thousand, eight hundred forty.

### Scientific notation

• Scientific notation: 3.084 × 104

### Factors of 30840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 267

### Divisors of 30840

• Number of divisors d(n): 32
• Complete list of divisors:
• Sum of all divisors σ(n): 92880
• Sum of proper divisors (its aliquot sum) s(n): 62040
• 30840 is an abundant number, because the sum of its proper divisors (62040) is greater than itself. Its abundance is 31200

### Bases of 30840

• Binary: 1111000011110002
• Base-36: NSO

### Squares and roots of 30840

• 30840 squared (308402) is 951105600
• 30840 cubed (308403) is 29332096704000
• The square root of 30840 is 175.6132113481
• The cube root of 30840 is 31.3596680169

### Scales and comparisons

How big is 30840?
• 30,840 seconds is equal to 8 hours, 34 minutes.
• To count from 1 to 30,840 would take you about eight 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 30840 cubic inches would be around 2.6 feet tall.

### Recreational maths with 30840

• 30840 backwards is 04803
• 30840 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 30840's digits is 15
• More coming soon!