# 858

## 858 is an even composite number composed of four prime numbers multiplied together.

What does the number 858 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

858 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

## Prime factorization of 858:

### 2 × 3 × 11 × 13

See below for interesting mathematical facts about the number 858 from the Numbermatics database.

### Names of 858

• Cardinal: 858 can be written as Eight hundred fifty-eight.

### Scientific notation

• Scientific notation: 8.58 × 102

### Factors of 858

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 29

### Divisors of 858

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 2016
• Sum of proper divisors (its aliquot sum) s(n): 1158
• 858 is an abundant number, because the sum of its proper divisors (1158) is greater than itself. Its abundance is 300

### Bases of 858

• Binary: 11010110102
• Base-36: NU

### Squares and roots of 858

• 858 squared (8582) is 736164
• 858 cubed (8583) is 631628712
• The square root of 858 is 29.2916370317
• The cube root of 858 is 9.5023078419

### Scales and comparisons

How big is 858?
• 858 seconds is equal to 14 minutes, 18 seconds.
• To count from 1 to 858 would take you about seven minutes.

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 858 cubic inches would be around 0.8 feet tall.

### Recreational maths with 858

• 858 is the same when its digits are reversed! That makes it a palindromic number.
• The number of decimal digits it has is: 3
• The sum of 858's digits is 21
• More coming soon!