128989
128,989 is an odd composite number composed of two prime numbers multiplied together.
128989 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 128989:
7 × 18427
See below for interesting mathematical facts about the number 128989 from the Numbermatics database.
Names of 128989
- Cardinal: 128989 can be written as One hundred twenty-eight thousand, nine hundred eighty-nine.
Scientific notation
- Scientific notation: 1.28989 × 105
Factors of 128989
Divisors of 128989
Bases of 128989
- Binary: 111110111110111012
- Hexadecimal: 0x1F7DD
- Base-36: 2RJ1
Squares and roots of 128989
- 128989 squared (1289892) is 16638162121
- 128989 cubed (1289893) is 2146139893825669
-
The
square root of 128989 is 359.1503863287 -
The
cube root of 128989 is 50.5263072421
Scales and comparisons
How big is 128989?- 128,989 seconds is equal to 1 day, 11 hours, 49 minutes, 49 seconds.
-
To count from 1 to 128,989 would take you about eleven 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 128989 cubic inches would be around 4.2 feet tall.
Recreational maths with 128989
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