128728637440
128,728,637,440 is an even composite number composed of five prime numbers multiplied together.
What does the number 128728637440 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 336 divisors.
128728637440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 128728637440:
213 × 5 × 13 × 232 × 457
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 13 × 23 × 23 × 457)See below for interesting mathematical facts about the number 128728637440 from the Numbermatics database.
Names of 128728637440
- Cardinal: 128728637440 can be written as One hundred twenty-eight billion, seven hundred twenty-eight million, six hundred thirty-seven thousand, four hundred forty.
Scientific notation
- Scientific notation: 1.2872863744 × 1011
Factors of 128728637440
Divisors of 128728637440
- Number of divisors d(n): 336
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 23 26 32 40 46 52 64 65 80 92 104 115 128 130 160 184 208 230 256 260 299 320 368 416 457 460 512 520 529 598 640 736 832 914 920 1024 1040 1058 1196 1280 1472 1495 1664 1828 1840 2048 2080 2116 2285 2392 2560 2645 2944 2990 3328 3656 3680 4096 4160 4232 4570 4784 5120 5290 5888 5941 5980 6656 6877 7312 7360 8192 8320 8464 9140 9568 10240 10511 10580 11776 11882 11960 13312 13754 14624 14720 16640 16928 18280 19136 20480 21022 21160 23552 23764 23920 26624 27508 29248 29440 29705 33280 33856 34385 36560 38272 40960 42044 42320 47104 47528 47840 52555 53248 55016 58496 58880 59410 66560 67712 68770 73120 76544 84088 84640 94208 95056 95680 105110 106496 110032 116992 117760 118820 133120 135424 136643 137540 146240 153088 168176 169280 188416 190112 191360 210220 220064 233984 235520 237640 241753 266240 270848 273286 275080 292480 306176 336352 338560 380224 382720 420440 440128 467968 471040 475280 483506 532480 541696 546572 550160 584960 612352 672704 677120 683215 760448 765440 840880 880256 935936 942080 950560 967012 1083392 1093144 1100320 1169920 1208765 1224704 1345408 1354240 1366430 1520896 1530880 1681760 1760512 1871872 1901120 1934024 2166784 2186288 2200640 2339840 2417530 2449408 2690816 2708480 2732860 3041792 3061760 3142789 3363520 3521024 3743744 3802240 3868048 4333568 4372576 4401280 4679680 4835060 5381632 5416960 5465720 6083584 6123520 6285578 6727040 7042048 7604480 7736096 8745152 8802560 9359360 9670120 10763264 10833920 10931440 12167168 12247040 12571156 13454080 14084096 15208960 15472192 15713945 17490304 17605120 18718720 19340240 21526528 21667840 21862880 24334336 25142312 26908160 28168192 30417920 30944384 31427890 34980608 35210240 38680480 43053056 43725760 48668672 50284624 53816320 56336384 60835840 61888768 62855780 69961216 70420480 77360960 86106112 87451520 100569248 107632640 121671680 123777536 125711560 139922432 140840960 154721920 174903040 201138496 215265280 243343360 247555072 251423120 279844864 281681920 309443840 349806080 402276992 430530560 495110144 502846240 559689728 618887680 699612160 804553984 990220288 1005692480 1119379456 1237775360 1399224320 1609107968 1980440576 2011384960 2475550720 2798448640 3218215936 4022769920 4951101440 5596897280 6436431872 8045539840 9902202880 12872863744 16091079680 25745727488 32182159360 64364318720 128728637440
- Sum of all divisors σ(n): 348548587128
- Sum of proper divisors (its aliquot sum) s(n): 219819949688
- 128728637440 is an abundant number, because the sum of its proper divisors (219819949688) is greater than itself. Its abundance is 91091312248
Bases of 128728637440
- Binary: 11101111110001101001100100000000000002
- Hexadecimal: 0x1DF8D32000
- Base-36: 1N4XPGCG
Squares and roots of 128728637440
- 128728637440 squared (1287286374402) is 16571062097158969753600
- 128728637440 cubed (1287286374403) is 2133170244700903071455100534784000
-
The
square root of 128728637440 is 358787.7331236395 -
The
cube root of 128728637440 is 5049.2288786307
Scales and comparisons
How big is 128728637440?- 128,728,637,440 seconds is equal to 4,093 years, 8 weeks, 6 days, 18 hours, 50 minutes, 40 seconds.
-
To count from 1 to 128,728,637,440 would take you about eight thousand, one hundred eighty-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 128728637440 cubic inches would be around 420.8 feet tall.
Recreational maths with 128728637440
- 128728637440 backwards is 044736827821
- 128728637440 is a
Harshad number . - The number of decimal digits it has is: 12
- The sum of 128728637440's digits is 52
- More coming soon!
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