# 1218816

## 1,218,816 is an even composite number composed of three prime numbers multiplied together.

What does the number 1218816 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 81 divisors.

1218816 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighty-one divisors.

## Prime factorization of 1218816:

### 28 × 32 × 232

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 23 × 23)

See below for interesting mathematical facts about the number 1218816 from the Numbermatics database.

### Names of 1218816

• Cardinal: 1218816 can be written as One million, two hundred eighteen thousand, eight hundred sixteen.

### Scientific notation

• Scientific notation: 1.218816 × 106

### Factors of 1218816

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 28

### Divisors of 1218816

• Number of divisors d(n): 81
• Complete list of divisors:
• Sum of all divisors σ(n): 3673579
• Sum of proper divisors (its aliquot sum) s(n): 2454763
• 1218816 is an abundant number, because the sum of its proper divisors (2454763) is greater than itself. Its abundance is 1235947

### Bases of 1218816

• Binary: 1001010011001000000002
• Base-36: Q4G0

### Squares and roots of 1218816

• 1218816 squared (12188162) is 1485512441856
• 1218816 cubed (12188163) is 1810566332333162496
• 1218816 is a perfect square number. Its square root is 1104
• The cube root of 1218816 is 106.8183951819

### Scales and comparisons

How big is 1218816?
• 1,218,816 seconds is equal to 2 weeks, 2 hours, 33 minutes, 36 seconds.
• To count from 1 to 1,218,816 would take you about three 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 1218816 cubic inches would be around 8.9 feet tall.

### Recreational maths with 1218816

• 1218816 backwards is 6188121
• The number of decimal digits it has is: 7
• The sum of 1218816's digits is 27
• More coming soon!