# 21309844416

## 21,309,844,416 is an even composite number composed of five prime numbers multiplied together.

What does the number 21309844416 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 252 divisors.

21309844416 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred fifty-two divisors.

## Prime factorization of 21309844416:

### 26 × 3 × 72 × 312 × 2357

(2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 7 × 31 × 31 × 2357)

See below for interesting mathematical facts about the number 21309844416 from the Numbermatics database.

### Names of 21309844416

• Cardinal: 21309844416 can be written as Twenty-one billion, three hundred nine million, eight hundred forty-four thousand, four hundred sixteen.

### Scientific notation

• Scientific notation: 2.1309844416 × 1010

### Factors of 21309844416

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2400

### Divisors of 21309844416

• Number of divisors d(n): 252
• Complete list of divisors:
• Sum of all divisors σ(n): 67800300264
• Sum of proper divisors (its aliquot sum) s(n): 46490455848
• 21309844416 is an abundant number, because the sum of its proper divisors (46490455848) is greater than itself. Its abundance is 25180611432

### Bases of 21309844416

• Binary: 100111101100010101001101011110000002
• Base-36: 9SFBX6O

### Squares and roots of 21309844416

• 21309844416 squared (213098444162) is 454109469034126381056
• 21309844416 cubed (213098444163) is 9677002132949602974784489783296
• The square root of 21309844416 is 145978.9177107433
• The cube root of 21309844416 is 2772.4268294887

### Scales and comparisons

How big is 21309844416?
• 21,309,844,416 seconds is equal to 677 years, 30 weeks, 3 days, 17 hours, 13 minutes, 36 seconds.
• To count from 1 to 21,309,844,416 would take you about one thousand, three hundred fifty-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 21309844416 cubic inches would be around 231 feet tall.

### Recreational maths with 21309844416

• 21309844416 backwards is 61444890312
• 21309844416 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21309844416's digits is 42
• More coming soon!