128972160
128,972,160 is an even composite number composed of four prime numbers multiplied together.
128972160 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 128972160:
27 × 32 × 5 × 22391
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 22391)See below for interesting mathematical facts about the number 128972160 from the Numbermatics database.
Names of 128972160
- Cardinal: 128972160 can be written as One hundred twenty-eight million, nine hundred seventy-two thousand, one hundred sixty.
Scientific notation
- Scientific notation: 1.2897216 × 108
Factors of 128972160
Divisors of 128972160
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 288 320 360 384 480 576 640 720 960 1152 1440 1920 2880 5760 22391 44782 67173 89564 111955 134346 179128 201519 223910 268692 335865 358256 403038 447820 537384 671730 716512 806076 895640 1007595 1074768 1343460 1433024 1612152 1791280 2015190 2149536 2686920 2866048 3224304 3582560 4030380 4299072 5373840 6448608 7165120 8060760 8598144 10747680 12897216 14330240 16121520 21495360 25794432 32243040 42990720 64486080 128972160
- Sum of all divisors σ(n): 445376880
- Sum of proper divisors (its aliquot sum) s(n): 316404720
- 128972160 is an abundant number, because the sum of its proper divisors (316404720) is greater than itself. Its abundance is 187432560
Bases of 128972160
- Binary: 1111010111111110101100000002
- Hexadecimal: 0x7AFF580
- Base-36: 24SBK0
Squares and roots of 128972160
- 128972160 squared (1289721602) is 16633818055065600
- 128972160 cubed (1289721603) is 2145299443608809373696000
-
The
square root of 128972160 is 11356.5910378071 -
The
cube root of 128972160 is 505.2410834655
Scales and comparisons
How big is 128972160?- 128,972,160 seconds is equal to 4 years, 5 weeks, 1 day, 17 hours, 36 minutes.
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To count from 1 to 128,972,160 would take you about six 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 128972160 cubic inches would be around 42.1 feet tall.
Recreational maths with 128972160
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