# 161920

## 161,920 is an even composite number composed of four prime numbers multiplied together.

What does the number 161920 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 64 divisors.

161920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.

## Prime factorization of 161920:

### 27 × 5 × 11 × 23

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 23)

See below for interesting mathematical facts about the number 161920 from the Numbermatics database.

### Names of 161920

• Cardinal: 161920 can be written as One hundred sixty-one thousand, nine hundred twenty.

### Scientific notation

• Scientific notation: 1.6192 × 105

### Factors of 161920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 41

### Divisors of 161920

• Number of divisors d(n): 64
• Complete list of divisors:
• Sum of all divisors σ(n): 440640
• Sum of proper divisors (its aliquot sum) s(n): 278720
• 161920 is an abundant number, because the sum of its proper divisors (278720) is greater than itself. Its abundance is 116800

### Bases of 161920

• Binary: 1001111000100000002
• Base-36: 3GXS

### Squares and roots of 161920

• 161920 squared (1619202) is 26218086400
• 161920 cubed (1619203) is 4245232549888000
• The square root of 161920 is 402.3928428787
• The cube root of 161920 is 54.5046428723

### Scales and comparisons

How big is 161920?
• 161,920 seconds is equal to 20 hours, 58 minutes, 40 seconds.
• To count from 1 to 161,920 would take you about twenty hours.

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 161920 cubic inches would be around 4.5 feet tall.

### Recreational maths with 161920

• 161920 backwards is 029161
• The number of decimal digits it has is: 6
• The sum of 161920's digits is 19
• More coming soon!