# 1620

## 1,620 is an even composite number composed of three prime numbers multiplied together.

What does the number 1620 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 30 divisors.

1620 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty divisors.

## Prime factorization of 1620:

### 22 × 34 × 5

(2 × 2 × 3 × 3 × 3 × 3 × 5)

See below for interesting mathematical facts about the number 1620 from the Numbermatics database.

### Names of 1620

• Cardinal: 1620 can be written as One thousand, six hundred twenty.

### Scientific notation

• Scientific notation: 1.62 × 103

### Factors of 1620

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 10

### Divisors of 1620

• Number of divisors d(n): 30
• Complete list of divisors:
• Sum of all divisors σ(n): 5082
• Sum of proper divisors (its aliquot sum) s(n): 3462
• 1620 is an abundant number, because the sum of its proper divisors (3462) is greater than itself. Its abundance is 1842

### Bases of 1620

• Binary: 110010101002
• Base-36: 190

### Squares and roots of 1620

• 1620 squared (16202) is 2624400
• 1620 cubed (16203) is 4251528000
• The square root of 1620 is 40.2492235949
• The cube root of 1620 is 11.7446029235

### Scales and comparisons

How big is 1620?
• 1,620 seconds is equal to 27 minutes.
• To count from 1 to 1,620 would take you about twenty-seven minutes.

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 1620 cubic inches would be around 1 feet tall.

### Recreational maths with 1620

• 1620 backwards is 0261
• 1620 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1620's digits is 9
• More coming soon!