# 1321920

## 1,321,920 is an even composite number composed of four prime numbers multiplied together.

What does the number 1321920 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 168 divisors.

1321920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.

## Prime factorization of 1321920:

### 26 × 35 × 5 × 17

(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 5 × 17)

See below for interesting mathematical facts about the number 1321920 from the Numbermatics database.

### Names of 1321920

• Cardinal: 1321920 can be written as One million, three hundred twenty-one thousand, nine hundred twenty.

### Scientific notation

• Scientific notation: 1.32192 × 106

### Factors of 1321920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 27

### Divisors of 1321920

• Number of divisors d(n): 168
• Complete list of divisors:
• Sum of all divisors σ(n): 4992624
• Sum of proper divisors (its aliquot sum) s(n): 3670704
• 1321920 is an abundant number, because the sum of its proper divisors (3670704) is greater than itself. Its abundance is 2348784

### Bases of 1321920

• Binary: 1010000101011110000002
• Base-36: SC00

### Squares and roots of 1321920

• 1321920 squared (13219202) is 1747472486400
• 1321920 cubed (13219203) is 2310018829221888000
• The square root of 1321920 is 1149.7477984323
• The cube root of 1321920 is 109.7492912853

### Scales and comparisons

How big is 1321920?
• 1,321,920 seconds is equal to 2 weeks, 7 hours, 12 minutes.
• To count from 1 to 1,321,920 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 1321920 cubic inches would be around 9.1 feet tall.

### Recreational maths with 1321920

• 1321920 backwards is 0291231
• 1321920 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 1321920's digits is 18
• More coming soon!