# 21000168

## 21,000,168 is an even composite number composed of six prime numbers multiplied together.

What does the number 21000168 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 256 divisors.

21000168 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.

## Prime factorization of 21000168:

### 23 × 33 × 7 × 17 × 19 × 43

(2 × 2 × 2 × 3 × 3 × 3 × 7 × 17 × 19 × 43)

See below for interesting mathematical facts about the number 21000168 from the Numbermatics database.

### Names of 21000168

• Cardinal: 21000168 can be written as Twenty-one million, one hundred sixty-eight.

### Scientific notation

• Scientific notation: 2.1000168 × 107

### Factors of 21000168

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 91

### Divisors of 21000168

• Number of divisors d(n): 256
• Complete list of divisors:
• Sum of all divisors σ(n): 76032000
• Sum of proper divisors (its aliquot sum) s(n): 55031832
• 21000168 is an abundant number, because the sum of its proper divisors (55031832) is greater than itself. Its abundance is 34031664

### Bases of 21000168

• Binary: 10100000001101111111010002
• Base-36: CI3U0

### Squares and roots of 21000168

• 21000168 squared (210001682) is 441007056028224
• 21000168 cubed (210001683) is 9261222265778116741632
• The square root of 21000168 is 4582.5940252219
• The cube root of 21000168 is 275.8931533493

### Scales and comparisons

How big is 21000168?
• 21,000,168 seconds is equal to 34 weeks, 5 days, 1 hour, 22 minutes, 48 seconds.
• To count from 1 to 21,000,168 would take you about fourteen hours!

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 21000168 cubic inches would be around 23 feet tall.

### Recreational maths with 21000168

• 21000168 backwards is 86100012
• 21000168 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21000168's digits is 18
• More coming soon!