# 90720

## 90,720 is an even composite number composed of four prime numbers multiplied together.

What does the number 90720 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 120 divisors.

90720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.

## Prime factorization of 90720:

### 25 × 34 × 5 × 7

(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7)

See below for interesting mathematical facts about the number 90720 from the Numbermatics database.

### Names of 90720

• Cardinal: 90720 can be written as Ninety thousand, seven hundred twenty.

### Scientific notation

• Scientific notation: 9.072 × 104

### Factors of 90720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 17

### Divisors of 90720

• Number of divisors d(n): 120
• Complete list of divisors:
• Sum of all divisors σ(n): 365904
• Sum of proper divisors (its aliquot sum) s(n): 275184
• 90720 is an abundant number, because the sum of its proper divisors (275184) is greater than itself. Its abundance is 184464

### Bases of 90720

• Binary: 101100010011000002
• Base-36: 1Y00

### Squares and roots of 90720

• 90720 squared (907202) is 8230118400
• 90720 cubed (907203) is 746636341248000
• The square root of 90720 is 301.1976095523
• The cube root of 90720 is 44.9332343233

### Scales and comparisons

How big is 90720?
• 90,720 seconds is equal to 1 day, 1 hour, 12 minutes.
• To count from 1 to 90,720 would take you about twelve 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 90720 cubic inches would be around 3.7 feet tall.

### Recreational maths with 90720

• 90720 backwards is 02709
• 90720 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 90720's digits is 18
• More coming soon!