128990988
128,990,988 is an even composite number composed of five prime numbers multiplied together.
128990988 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 128990988:
22 × 33 × 7 × 97 × 1759
(2 × 2 × 3 × 3 × 3 × 7 × 97 × 1759)See below for interesting mathematical facts about the number 128990988 from the Numbermatics database.
Names of 128990988
- Cardinal: 128990988 can be written as One hundred twenty-eight million, nine hundred ninety thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 1.28990988 × 108
Factors of 128990988
Divisors of 128990988
- Number of divisors d(n): 96
-
Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 97 108 126 189 194 252 291 378 388 582 679 756 873 1164 1358 1746 1759 2037 2619 2716 3492 3518 4074 5238 5277 6111 7036 8148 10476 10554 12222 12313 15831 18333 21108 24444 24626 31662 36666 36939 47493 49252 63324 73332 73878 94986 110817 147756 170623 189972 221634 332451 341246 443268 511869 664902 682492 1023738 1194361 1329804 1535607 2047476 2388722 3071214 3583083 4606821 4777444 6142428 7166166 9213642 10749249 14332332 18427284 21498498 32247747 42996996 64495494 128990988
- Sum of all divisors σ(n): 386355200
- Sum of proper divisors (its aliquot sum) s(n): 257364212
- 128990988 is an abundant number, because the sum of its proper divisors (257364212) is greater than itself. Its abundance is 128373224
Bases of 128990988
- Binary: 1111011000000111111000011002
- Hexadecimal: 0x7B03F0C
- Base-36: 24SQ30
Squares and roots of 128990988
- 128990988 squared (1289909882) is 16638674985216144
- 128990988 cubed (1289909883) is 2146239125353915808110272
-
The
square root of 128990988 is 11357.4199534929 -
The
cube root of 128990988 is 505.2656681413
Scales and comparisons
How big is 128990988?- 128,990,988 seconds is equal to 4 years, 5 weeks, 1 day, 22 hours, 49 minutes, 48 seconds.
-
To count from 1 to 128,990,988 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 128990988 cubic inches would be around 42.1 feet tall.
Recreational maths with 128990988
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