# 28389678449

## 28,389,678,449 is an odd composite number composed of three prime numbers multiplied together.

What does the number 28389678449 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

28389678449 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

## Prime factorization of 28389678449:

### 11 × 312 × 1393

(11 × 31 × 31 × 139 × 139 × 139)

See below for interesting mathematical facts about the number 28389678449 from the Numbermatics database.

### Names of 28389678449

• Cardinal: 28389678449 can be written as Twenty-eight billion, three hundred eighty-nine million, six hundred seventy-eight thousand, four hundred forty-nine.

### Scientific notation

• Scientific notation: 2.8389678449 × 1010

### Factors of 28389678449

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 181

### Divisors of 28389678449

• Number of divisors d(n): 24
• Complete list of divisors:
• Sum of all divisors σ(n): 32233733280
• Sum of proper divisors (its aliquot sum) s(n): 3844054831
• 28389678449 is a deficient number, because the sum of its proper divisors (3844054831) is less than itself. Its deficiency is 24545623618

### Bases of 28389678449

• Binary: 110100111000010100000011101011100012
• Base-36: D1IHC35

### Squares and roots of 28389678449

• 28389678449 squared (283896784492) is 805973842437615045601
• 28389678449 cubed (283896784493) is 22881338225108881487056861952849
• The square root of 28389678449 is 168492.3691120759
• The cube root of 28389678449 is 3050.6109480773

### Scales and comparisons

How big is 28389678449?
• 28,389,678,449 seconds is equal to 902 years, 36 weeks, 4 days, 5 hours, 47 minutes, 29 seconds.
• To count from 1 to 28,389,678,449 would take you about one thousand, eight hundred five 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 28389678449 cubic inches would be around 254.2 feet tall.

### Recreational maths with 28389678449

• 28389678449 backwards is 94487698382
• The number of decimal digits it has is: 11
• The sum of 28389678449's digits is 68
• More coming soon!