72991125
72,991,125 is an odd composite number composed of three prime numbers multiplied together.
72991125 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 72991125:
38 × 53 × 89
(3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 5 × 89)See below for interesting mathematical facts about the number 72991125 from the Numbermatics database.
Names of 72991125
- Cardinal: 72991125 can be written as Seventy-two million, nine hundred ninety-one thousand, one hundred twenty-five.
Scientific notation
- Scientific notation: 7.2991125 × 107
Factors of 72991125
Divisors of 72991125
- Number of divisors d(n): 72
-
Complete list of divisors:
1 3 5 9 15 25 27 45 75 81 89 125 135 225 243 267 375 405 445 675 729 801 1125 1215 1335 2025 2187 2225 2403 3375 3645 4005 6075 6561 6675 7209 10125 10935 11125 12015 18225 20025 21627 30375 32805 33375 36045 54675 60075 64881 91125 100125 108135 164025 180225 194643 273375 300375 324405 540675 583929 820125 901125 973215 1622025 2703375 2919645 4866075 8110125 14598225 24330375 72991125
- Sum of all divisors σ(n): 138167640
- Sum of proper divisors (its aliquot sum) s(n): 65176515
- 72991125 is a deficient number, because the sum of its proper divisors (65176515) is less than itself. Its deficiency is 7814610
Bases of 72991125
- Binary: 1000101100111000001100101012
- Hexadecimal: 0x459C195
- Base-36: 17GGB9
Squares and roots of 72991125
- 72991125 squared (729911252) is 5327704328765625
- 72991125 cubed (729911253) is 388875132623972830078125
-
The
square root of 72991125 is 8543.4843594403 -
The
cube root of 72991125 is 417.9169821319
Scales and comparisons
How big is 72991125?- 72,991,125 seconds is equal to 2 years, 16 weeks, 4 days, 19 hours, 18 minutes, 45 seconds.
-
To count from 1 to 72,991,125 would take you about three 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 72991125 cubic inches would be around 34.8 feet tall.
Recreational maths with 72991125
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