7128021420
7,128,021,420 is an even composite number composed of six prime numbers multiplied together.
What does the number 7128021420 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 144 divisors.
7128021420 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 7128021420:
22 × 32 × 5 × 13 × 43 × 70841
(2 × 2 × 3 × 3 × 5 × 13 × 43 × 70841)See below for interesting mathematical facts about the number 7128021420 from the Numbermatics database.
Names of 7128021420
- Cardinal: 7128021420 can be written as Seven billion, one hundred twenty-eight million, twenty-one thousand, four hundred twenty.
Scientific notation
- Scientific notation: 7.12802142 × 109
Factors of 7128021420
Divisors of 7128021420
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 43 45 52 60 65 78 86 90 117 129 130 156 172 180 195 215 234 258 260 387 390 430 468 516 559 585 645 774 780 860 1118 1170 1290 1548 1677 1935 2236 2340 2580 2795 3354 3870 5031 5590 6708 7740 8385 10062 11180 16770 20124 25155 33540 50310 70841 100620 141682 212523 283364 354205 425046 637569 708410 850092 920933 1062615 1275138 1416820 1841866 2125230 2550276 2762799 3046163 3187845 3683732 4250460 4604665 5525598 6092326 6375690 8288397 9138489 9209330 11051196 12184652 12751380 13813995 15230815 16576794 18276978 18418660 27415467 27627990 30461630 33153588 36553956 39600119 41441985 45692445 54830934 55255980 60923260 79200238 82883970 91384890 109661868 118800357 137077335 158400476 165767940 182769780 198000595 237600714 274154670 356401071 396001190 475201428 548309340 594001785 712802142 792002380 1188003570 1425604284 1782005355 2376007140 3564010710 7128021420
- Sum of all divisors σ(n): 23826714912
- Sum of proper divisors (its aliquot sum) s(n): 16698693492
- 7128021420 is an abundant number, because the sum of its proper divisors (16698693492) is greater than itself. Its abundance is 9570672072
Bases of 7128021420
- Binary: 1101010001101110011111001101011002
- Hexadecimal: 0x1A8DCF9AC
- Base-36: 39VU8J0
Squares and roots of 7128021420
- 7128021420 squared (71280214202) is 50808689363978816400
- 7128021420 cubed (71280214203) is 362165426108567179725447288000
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The
square root of 7128021420 is 84427.6105311527 -
The
cube root of 7128021420 is 1924.5225257561
Scales and comparisons
How big is 7128021420?- 7,128,021,420 seconds is equal to 226 years, 33 weeks, 5 days, 5 hours, 57 minutes.
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To count from 1 to 7,128,021,420 would take you about four hundred fifty-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 7128021420 cubic inches would be around 160.4 feet tall.
Recreational maths with 7128021420
- 7128021420 backwards is 0241208217
- The number of decimal digits it has is: 10
- The sum of 7128021420's digits is 27
- More coming soon!
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