# 16777216

## 16,777,216 is an even composite number. It is composed of a single prime number multiplied by itself twenty-three times.

What does the number 16777216 look like?

This visualization shows the relationship between its 1 prime factors (large circles) and 25 divisors.

16777216 is an even composite number. It is composed of one distinct prime number multiplied by itself twenty-three times. It has a total of twenty-five divisors.

## Prime factorization of 16777216:

### 224

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2)

See below for interesting mathematical facts about the number 16777216 from the Numbermatics database.

### Names of 16777216

• Cardinal: 16777216 can be written as Sixteen million, seven hundred seventy-seven thousand, two hundred sixteen.

### Scientific notation

• Scientific notation: 1.6777216 × 107

### Factors of 16777216

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 24
• Sum of prime factors: 2

### Divisors of 16777216

• Number of divisors d(n): 25
• Complete list of divisors:
• Sum of all divisors σ(n): 33554431
• Sum of proper divisors (its aliquot sum) s(n): 16777215
• 16777216 is a deficient number, because the sum of its proper divisors (16777215) is less than itself. Its deficiency is 1

### Bases of 16777216

• Binary: 10000000000000000000000002
• Base-36: 9ZLDS

### Scales and comparisons

How big is 16777216?
• 16,777,216 seconds is equal to 27 weeks, 5 days, 4 hours, 20 minutes, 16 seconds.
• To count from 1 to 16,777,216 would take you about forty-one weeks!

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 16777216 cubic inches would be around 21.3 feet tall.

### Recreational maths with 16777216

• 16777216 backwards is 61277761
• The number of decimal digits it has is: 8
• The sum of 16777216's digits is 37
• More coming soon!