729145728
729,145,728 is an even composite number composed of three prime numbers multiplied together.
729145728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-eight divisors.
Prime factorization of 729145728:
27 × 32 × 632939
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 632939)See below for interesting mathematical facts about the number 729145728 from the Numbermatics database.
Names of 729145728
- Cardinal: 729145728 can be written as Seven hundred twenty-nine million, one hundred forty-five thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 7.29145728 × 108
Factors of 729145728
Divisors of 729145728
- Number of divisors d(n): 48
- Complete list of divisors:
- Sum of all divisors σ(n): 2098196100
- Sum of proper divisors (its aliquot sum) s(n): 1369050372
- 729145728 is an abundant number, because the sum of its proper divisors (1369050372) is greater than itself. Its abundance is 639904644
Bases of 729145728
- Binary: 1010110111010111100001100000002
- Hexadecimal: 0x2B75E180
- Base-36: C244G0
Squares and roots of 729145728
- 729145728 squared (7291457282) is 531653492660649984
- 729145728 cubed (7291457283) is 387652872949792289536868352
-
The
square root of 729145728 is 27002.6985318135 -
The
cube root of 729145728 is 900.0599663747
Scales and comparisons
How big is 729145728?- 729,145,728 seconds is equal to 23 years, 9 weeks, 4 days, 4 hours, 28 minutes, 48 seconds.
-
To count from 1 to 729,145,728 would take you about thirty-four 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 729145728 cubic inches would be around 75 feet tall.
Recreational maths with 729145728
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