28738729920
28,738,729,920 is an even composite number composed of six prime numbers multiplied together.
28738729920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred twenty-four divisors.
Prime factorization of 28738729920:
26 × 3 × 5 × 61 × 449 × 1093
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 61 × 449 × 1093)See below for interesting mathematical facts about the number 28738729920 from the Numbermatics database.
Names of 28738729920
- Cardinal: 28738729920 can be written as Twenty-eight billion, seven hundred thirty-eight million, seven hundred twenty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.873872992 × 1010
Factors of 28738729920
Divisors of 28738729920
- Number of divisors d(n): 224
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 64 80 96 120 122 160 183 192 240 244 305 320 366 449 480 488 610 732 898 915 960 976 1093 1220 1347 1464 1796 1830 1952 2186 2245 2440 2694 2928 3279 3592 3660 3904 4372 4490 4880 5388 5465 5856 6558 6735 7184 7320 8744 8980 9760 10776 10930 11712 13116 13470 14368 14640 16395 17488 17960 19520 21552 21860 26232 26940 27389 28736 29280 32790 34976 35920 43104 43720 52464 53880 54778 58560 65580 66673 69952 71840 82167 86208 87440 104928 107760 109556 131160 133346 136945 143680 164334 174880 200019 209856 215520 219112 262320 266692 273890 328668 333365 349760 400038 410835 431040 438224 490757 524640 533384 547780 657336 666730 800076 821670 876448 981514 1000095 1049280 1066768 1095560 1314672 1333460 1472271 1600152 1643340 1752896 1963028 2000190 2133536 2191120 2453785 2629344 2666920 2944542 3200304 3286680 3926056 4000380 4267072 4382240 4907570 5258688 5333840 5889084 6400608 6573360 7361355 7852112 8000760 8764480 9815140 10667680 11778168 12801216 13146720 14722710 15704224 16001520 19630280 21335360 23556336 26293440 29445420 29936177 31408448 32003040 39260560 47112672 58890840 59872354 64006080 78521120 89808531 94225344 117781680 119744708 149680885 157042240 179617062 235563360 239489416 299361770 359234124 449042655 471126720 478978832 598723540 718468248 898085310 957957664 1197447080 1436936496 1796170620 1915915328 2394894160 2873872992 3592341240 4789788320 5747745984 7184682480 9579576640 14369364960 28738729920
- Sum of all divisors σ(n): 93032884800
- Sum of proper divisors (its aliquot sum) s(n): 64294154880
- 28738729920 is an abundant number, because the sum of its proper divisors (64294154880) is greater than itself. Its abundance is 35555424960
Bases of 28738729920
- Binary: 110101100001111011000110111110000002
- Hexadecimal: 0x6B0F637C0
- Base-36: D7AAPXC
Squares and roots of 28738729920
- 28738729920 squared (287387299202) is 825914597414703206400
- 28738729920 cubed (287387299203) is 23735736552086685685687615488000
-
The
square root of 28738729920 is 169525.0126677477 -
The
cube root of 28738729920 is 3063.0624899783
Scales and comparisons
How big is 28738729920?- 28,738,729,920 seconds is equal to 913 years, 41 weeks, 5 days, 4 hours, 32 minutes.
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To count from 1 to 28,738,729,920 would take you about one thousand, eight hundred twenty-seven 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 28738729920 cubic inches would be around 255.3 feet tall.
Recreational maths with 28738729920
- 28738729920 backwards is 02992783782
- The number of decimal digits it has is: 11
- The sum of 28738729920's digits is 57
- More coming soon!
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