# 139209840

## 139,209,840 is an even composite number composed of six prime numbers multiplied together.

What does the number 139209840 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 560 divisors.

139209840 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of five hundred sixty divisors.

## Prime factorization of 139209840:

### 24 × 36 × 5 × 7 × 11 × 31

(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 11 × 31)

See below for interesting mathematical facts about the number 139209840 from the Numbermatics database.

### Names of 139209840

• Cardinal: 139209840 can be written as One hundred thirty-nine million, two hundred nine thousand, eight hundred forty.

### Scientific notation

• Scientific notation: 1.3920984 × 108

### Factors of 139209840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 59

### Divisors of 139209840

• Number of divisors d(n): 560
• Complete list of divisors:
• Sum of all divisors σ(n): 624531456
• Sum of proper divisors (its aliquot sum) s(n): 485321616
• 139209840 is an abundant number, because the sum of its proper divisors (485321616) is greater than itself. Its abundance is 346111776

### Bases of 139209840

• Binary: 10000100110000101100011100002
• Base-36: 2AVR00

### Squares and roots of 139209840

• 139209840 squared (1392098402) is 19379379552825600
• 139209840 cubed (1392098403) is 2697800326848123323904000
• The square root of 139209840 is 11798.7219646875
• The cube root of 139209840 is 518.2706853377

### Scales and comparisons

How big is 139209840?
• 139,209,840 seconds is equal to 4 years, 22 weeks, 1 day, 5 hours, 24 minutes.
• To count from 1 to 139,209,840 would take you about six years!

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 139209840 cubic inches would be around 43.2 feet tall.

### Recreational maths with 139209840

• 139209840 backwards is 048902931
• 139209840 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 139209840's digits is 36
• More coming soon!