# 29981

## 29,981 is an odd composite number composed of two prime numbers multiplied together.

What does the number 29981 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

29981 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 29981:

### 7 × 4283

See below for interesting mathematical facts about the number 29981 from the Numbermatics database.

### Names of 29981

• Cardinal: 29981 can be written as Twenty-nine thousand, nine hundred eighty-one.

### Scientific notation

• Scientific notation: 2.9981 × 104

### Factors of 29981

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 4290

### Divisors of 29981

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 34272
• Sum of proper divisors (its aliquot sum) s(n): 4291
• 29981 is a deficient number, because the sum of its proper divisors (4291) is less than itself. Its deficiency is 25690

### Bases of 29981

• Binary: 1110101000111012
• Base-36: N4T

### Squares and roots of 29981

• 29981 squared (299812) is 898860361
• 29981 cubed (299813) is 26948732483141
• The square root of 29981 is 173.1502237943
• The cube root of 29981 is 31.0657639611

### Scales and comparisons

How big is 29981?
• 29,981 seconds is equal to 8 hours, 19 minutes, 41 seconds.
• To count from 1 to 29,981 would take you about eight 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 29981 cubic inches would be around 2.6 feet tall.

### Recreational maths with 29981

• 29981 backwards is 18992
• The number of decimal digits it has is: 5
• The sum of 29981's digits is 29
• More coming soon!