# 216513

## 216,513 is an odd composite number composed of two prime numbers multiplied together.

What does the number 216513 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 20 divisors.

216513 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of twenty divisors.

## Prime factorization of 216513:

### 39 × 11

(3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 11)

See below for interesting mathematical facts about the number 216513 from the Numbermatics database.

### Names of 216513

• Cardinal: 216513 can be written as Two hundred sixteen thousand, five hundred thirteen.

### Scientific notation

• Scientific notation: 2.16513 × 105

### Factors of 216513

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 14

### Divisors of 216513

• Number of divisors d(n): 20
• Complete list of divisors:
• Sum of all divisors σ(n): 354288
• Sum of proper divisors (its aliquot sum) s(n): 137775
• 216513 is a deficient number, because the sum of its proper divisors (137775) is less than itself. Its deficiency is 78738

### Bases of 216513

• Binary: 1101001101110000012
• Base-36: 4N29

### Squares and roots of 216513

• 216513 squared (2165132) is 46877879169
• 216513 cubed (2165133) is 10149670252517697
• The square root of 216513 is 465.3095743695
• The cube root of 216513 is 60.0474624453

### Scales and comparisons

How big is 216513?
• 216,513 seconds is equal to 2 days, 12 hours, 8 minutes, 33 seconds.
• To count from 1 to 216,513 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 216513 cubic inches would be around 5 feet tall.

### Recreational maths with 216513

• 216513 backwards is 315612
• The number of decimal digits it has is: 6
• The sum of 216513's digits is 18
• More coming soon!