# 81224

## 81,224 is an even composite number composed of four prime numbers multiplied together.

What does the number 81224 look like?

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

81224 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 81224:

### 23 × 11 × 13 × 71

(2 × 2 × 2 × 11 × 13 × 71)

See below for interesting mathematical facts about the number 81224 from the Numbermatics database.

### Names of 81224

• Cardinal: 81224 can be written as Eighty-one thousand, two hundred twenty-four.

### Scientific notation

• Scientific notation: 8.1224 × 104

### Factors of 81224

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 97

### Divisors of 81224

• Number of divisors d(n): 32
• Complete list of divisors:
• Sum of all divisors σ(n): 181440
• Sum of proper divisors (its aliquot sum) s(n): 100216
• 81224 is an abundant number, because the sum of its proper divisors (100216) is greater than itself. Its abundance is 18992

### Bases of 81224

• Binary: 100111101010010002
• Base-36: 1QO8

### Squares and roots of 81224

• 81224 squared (812242) is 6597338176
• 81224 cubed (812243) is 535862196007424
• The square root of 81224 is 284.9982456087
• The cube root of 81224 is 43.3073348323

### Scales and comparisons

How big is 81224?
• 81,224 seconds is equal to 22 hours, 33 minutes, 44 seconds.
• To count from 1 to 81,224 would take you about twenty-two 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 81224 cubic inches would be around 3.6 feet tall.

### Recreational maths with 81224

• 81224 backwards is 42218
• The number of decimal digits it has is: 5
• The sum of 81224's digits is 17
• More coming soon!