128884990
128,884,990 is an even composite number composed of six prime numbers multiplied together.
128884990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 128884990:
2 × 5 × 13 × 17 × 29 × 2011
See below for interesting mathematical facts about the number 128884990 from the Numbermatics database.
Names of 128884990
- Cardinal: 128884990 can be written as One hundred twenty-eight million, eight hundred eighty-four thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.2888499 × 108
Factors of 128884990
Divisors of 128884990
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 5 10 13 17 26 29 34 58 65 85 130 145 170 221 290 377 442 493 754 986 1105 1885 2011 2210 2465 3770 4022 4930 6409 10055 12818 20110 26143 32045 34187 52286 58319 64090 68374 116638 130715 170935 261430 291595 341870 444431 583190 758147 888862 991423 1516294 1982846 2222155 3790735 4444310 4957115 7581470 9914230 12888499 25776998 64442495 128884990
- Sum of all divisors σ(n): 273792960
- Sum of proper divisors (its aliquot sum) s(n): 144907970
- 128884990 is an abundant number, because the sum of its proper divisors (144907970) is greater than itself. Its abundance is 16022980
Bases of 128884990
- Binary: 1111010111010100000111111102
- Hexadecimal: 0x7AEA0FE
- Base-36: 24QGAM
Squares and roots of 128884990
- 128884990 squared (1288849902) is 16611340647300100
- 128884990 cubed (1288849903) is 2140952473213866915499000
-
The
square root of 128884990 is 11352.7525296729 -
The
cube root of 128884990 is 505.1272299761
Scales and comparisons
How big is 128884990?- 128,884,990 seconds is equal to 4 years, 5 weeks, 17 hours, 23 minutes, 10 seconds.
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To count from 1 to 128,884,990 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 128884990 cubic inches would be around 42.1 feet tall.
Recreational maths with 128884990
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