# 1215

## 1,215 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1215 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 12 divisors.

1215 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twelve divisors.

## Prime factorization of 1215:

### 35 × 5

(3 × 3 × 3 × 3 × 3 × 5)

See below for interesting mathematical facts about the number 1215 from the Numbermatics database.

### Names of 1215

• Cardinal: 1215 can be written as One thousand, two hundred fifteen.

### Scientific notation

• Scientific notation: 1.215 × 103

### Factors of 1215

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 8

### Divisors of 1215

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 2184
• Sum of proper divisors (its aliquot sum) s(n): 969
• 1215 is a deficient number, because the sum of its proper divisors (969) is less than itself. Its deficiency is 246

### Bases of 1215

• Binary: 100101111112
• Hexadecimal: 0x4BF
• Base-36: XR

### Squares and roots of 1215

• 1215 squared (12152) is 1476225
• 1215 cubed (12153) is 1793613375
• The square root of 1215 is 34.8568501159
• The cube root of 1215 is 10.6706799135

### Scales and comparisons

How big is 1215?
• 1,215 seconds is equal to 20 minutes, 15 seconds.
• To count from 1 to 1,215 would take you about twenty minutes.

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 1215 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1215

• 1215 backwards is 5121
• 1215 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1215's digits is 9
• More coming soon!

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The information we have on file for 1215 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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