# 19970720

## 19,970,720 is an even composite number composed of five prime numbers multiplied together.

What does the number 19970720 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 96 divisors.

19970720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.

## Prime factorization of 19970720:

### 25 × 5 × 7 × 11 × 1621

(2 × 2 × 2 × 2 × 2 × 5 × 7 × 11 × 1621)

See below for interesting mathematical facts about the number 19970720 from the Numbermatics database.

### Names of 19970720

• Cardinal: 19970720 can be written as Nineteen million, nine hundred seventy thousand, seven hundred twenty.

### Scientific notation

• Scientific notation: 1.997072 × 107

### Factors of 19970720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1646

### Divisors of 19970720

• Number of divisors d(n): 96
• Complete list of divisors:
• Sum of all divisors σ(n): 58859136
• Sum of proper divisors (its aliquot sum) s(n): 38888416
• 19970720 is an abundant number, because the sum of its proper divisors (38888416) is greater than itself. Its abundance is 18917696

### Bases of 19970720

• Binary: 10011000010111010101000002
• Base-36: BW1I8

### Squares and roots of 19970720

• 19970720 squared (199707202) is 398829657318400
• 19970720 cubed (199707203) is 7964915414001717248000
• The square root of 19970720 is 4468.8611524637
• The cube root of 19970720 is 271.3092333849

### Scales and comparisons

How big is 19970720?
• 19,970,720 seconds is equal to 33 weeks, 3 hours, 25 minutes, 20 seconds.
• To count from 1 to 19,970,720 would take you about forty-nine 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 19970720 cubic inches would be around 22.6 feet tall.

### Recreational maths with 19970720

• 19970720 backwards is 02707991
• 19970720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 19970720's digits is 35
• More coming soon!