# 1728917728

## 1,728,917,728 is an even composite number composed of four prime numbers multiplied together.

What does the number 1728917728 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

1728917728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

## Prime factorization of 1728917728:

### 25 × 23 × 1187 × 1979

(2 × 2 × 2 × 2 × 2 × 23 × 1187 × 1979)

See below for interesting mathematical facts about the number 1728917728 from the Numbermatics database.

### Names of 1728917728

• Cardinal: 1728917728 can be written as One billion, seven hundred twenty-eight million, nine hundred seventeen thousand, seven hundred twenty-eight.

### Scientific notation

• Scientific notation: 1.728917728 × 109

### Factors of 1728917728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3191

### Divisors of 1728917728

• Number of divisors d(n): 48
• Complete list of divisors:
• Sum of all divisors σ(n): 3556586880
• Sum of proper divisors (its aliquot sum) s(n): 1827669152
• 1728917728 is an abundant number, because the sum of its proper divisors (1827669152) is greater than itself. Its abundance is 98751424

### Bases of 1728917728

• Binary: 11001110000110100110000111000002
• Base-36: SLCPGG

### Squares and roots of 1728917728

• 1728917728 squared (17289177282) is 2989156510192681984
• 1728917728 cubed (17289177283) is 5168005682238740578003812352
• The square root of 1728917728 is 41580.2564686655
• The cube root of 1728917728 is 1200.2123994403

### Scales and comparisons

How big is 1728917728?
• 1,728,917,728 seconds is equal to 54 years, 50 weeks, 4 days, 14 hours, 55 minutes, 28 seconds.
• To count from 1 to 1,728,917,728 would take you about one hundred nine 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 1728917728 cubic inches would be around 100 feet tall.

### Recreational maths with 1728917728

• 1728917728 backwards is 8277198271
• The number of decimal digits it has is: 10
• The sum of 1728917728's digits is 52
• More coming soon!