128138560
128,138,560 is an even composite number composed of five prime numbers multiplied together.
128138560 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 128138560:
26 × 5 × 11 × 59 × 617
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 59 × 617)See below for interesting mathematical facts about the number 128138560 from the Numbermatics database.
Names of 128138560
- Cardinal: 128138560 can be written as One hundred twenty-eight million, one hundred thirty-eight thousand, five hundred sixty.
Scientific notation
- Scientific notation: 1.2813856 × 108
Factors of 128138560
Divisors of 128138560
- Number of divisors d(n): 112
-
Complete list of divisors:
1 2 4 5 8 10 11 16 20 22 32 40 44 55 59 64 80 88 110 118 160 176 220 236 295 320 352 440 472 590 617 649 704 880 944 1180 1234 1298 1760 1888 2360 2468 2596 3085 3245 3520 3776 4720 4936 5192 6170 6490 6787 9440 9872 10384 12340 12980 13574 18880 19744 20768 24680 25960 27148 33935 36403 39488 41536 49360 51920 54296 67870 72806 98720 103840 108592 135740 145612 182015 197440 207680 217184 271480 291224 364030 400433 434368 542960 582448 728060 800866 1085920 1164896 1456120 1601732 2002165 2171840 2329792 2912240 3203464 4004330 5824480 6406928 8008660 11648960 12813856 16017320 25627712 32034640 64069280 128138560
- Sum of all divisors σ(n): 339059520
- Sum of proper divisors (its aliquot sum) s(n): 210920960
- 128138560 is an abundant number, because the sum of its proper divisors (210920960) is greater than itself. Its abundance is 82782400
Bases of 128138560
- Binary: 1111010001100111101010000002
- Hexadecimal: 0x7A33D40
- Base-36: 24AGCG
Squares and roots of 128138560
- 128138560 squared (1281385602) is 16419490558873600
- 128138560 cubed (1281385603) is 2103969876147658326016000
-
The
square root of 128138560 is 11319.8303874219 -
The
cube root of 128138560 is 504.1502029853
Scales and comparisons
How big is 128138560?- 128,138,560 seconds is equal to 4 years, 3 weeks, 6 days, 2 hours, 2 minutes, 40 seconds.
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To count from 1 to 128,138,560 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 128138560 cubic inches would be around 42 feet tall.
Recreational maths with 128138560
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