# 21973

## 21,973 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21973 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

21973 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 21973:

### 7 × 43 × 73

See below for interesting mathematical facts about the number 21973 from the Numbermatics database.

### Names of 21973

• Cardinal: 21973 can be written as Twenty-one thousand, nine hundred seventy-three.

### Scientific notation

• Scientific notation: 2.1973 × 104

### Factors of 21973

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 123

### Divisors of 21973

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 26048
• Sum of proper divisors (its aliquot sum) s(n): 4075
• 21973 is a deficient number, because the sum of its proper divisors (4075) is less than itself. Its deficiency is 17898

### Bases of 21973

• Binary: 1010101110101012
• Base-36: GYD

### Squares and roots of 21973

• 21973 squared (219732) is 482812729
• 21973 cubed (219733) is 10608844094317
• The square root of 21973 is 148.2329248177
• The cube root of 21973 is 28.0089257259

### Scales and comparisons

How big is 21973?
• 21,973 seconds is equal to 6 hours, 6 minutes, 13 seconds.
• To count from 1 to 21,973 would take you about six 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 21973 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21973

• 21973 backwards is 37912
• The number of decimal digits it has is: 5
• The sum of 21973's digits is 22
• More coming soon!