128135687680

Names of 128135687680

• Cardinal: 128135687680 can be written as One hundred twenty-eight billion, one hundred thirty-five million, six hundred eighty-seven thousand, six hundred eighty.

Scientific notation

• Scientific notation: 1.2813568768 × 10¹¹

Factors of 128135687680

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1682

Divisors of 128135687680

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 7 8 10 11 13 14 16 20 22 26 28 31 32 35 40 44 52 55 56 62 64 65 70 77 80 88 91 104 110 112 124 128 130 140 143 154 155 160 176 182 208 217 220 224 248 256 260 280 286 308 310 320 341 352 364 385 403 416 434 440 448 455 496 512 520 560 572 616 620 640 682 704 715 728 770 806 832 868 880 896 910 992 1001 1040 1085 1120 1144 1232 1240 1280 1364 1408 1430 1456 1540 1612 1613 1664 1705 1736 1760 1792 1820 1984 2002 2015 2080 2170 2240 2288 2387 2464 2480 2560 2728 2816 2821 2860 2912 3080 3224 3226 3328 3410 3472 3520 3584 3640 3968 4004 4030 4160 4340 4433 4480 4576 4774 4928 4960 5005 5456 5632 5642 5720 5824 6160 6448 6452 6656 6820 6944 7040 7280 7936 8008 8060 8065 8320 8680 8866 8960 9152 9548 9856 9920 10010 10912 11284 11291 11440 11648 11935 12320 12896 12904 13640 13888 14080 14105 14560 15872 16016 16120 16130 16640 17360 17732 17743 17920 18304 19096 19712 19840 20020 20969 21824 22165 22568 22582 22880 23296 23870 24640 25792 25808 27280 27776 28160 28210 29120 31031 32032 32240 32260 33280 34720 35464 35486 36608 38192 39424 39680 40040 41938 43648 44330 45136 45164 45760 46592 47740 49280 50003 51584 51616 54560 55552 56420 56455 58240 62062 64064 64480 64520 69440 70928 70972 73216 76384 79360 80080 83876 87296 88660 88715 90272 90328 91520 95480 98560 100006 103168 103232 104845 109120 111104 112840 112910 116480 124124 124201 128128 128960 129040 138880 141856 141944 146783 152768 155155 160160 167752 174592 177320 177430 180544 180656 183040 190960 197120 200012 206336 206464 209690 218240 225680 225820 230659 232960 248248 248402 250015 256256 257920 258080 277760 283712 283888 293566 305536 310310 320320 335504 350021 354640 354860 361088 361312 366080 381920 400024 412928 419380 436480 451360 451640 461318 496496 496804 500030 512512 515840 516160 550033 555520 567424 567776 587132 611072 620620 621005 640640 650039 671008 700042 709280 709720 722176 722624 733915 763840 800048 825856 838760 872960 902720 903280 922636 992992 993608 1000060 1031680 1032320 1100066 1134848 1135552 1153295 1174264 1222144 1241240 1242010 1281280 1300078 1342016 1400084 1418560 1419440 1444352 1445248 1467830 1527680 1600096 1614613 1677520 1750105 1805440 1806560 1845272 1985984 1987216 2000120 2064640 2200132 2269696 2271104 2306590 2348528 2482480 2484020 2562560 2600156 2684032 2750165 2800168 2837120 2838880 2890496 2935660 3055360 3200192 3229226 3250195 3355040 3500210 3610880 3613120 3690544 3850231 3971968 3974432 4000240 4129280 4400264 4542208 4550273 4613180 4697056 4964960 4968040 5200312 5368064 5500330 5600336 5674240 5677760 5780992 5871320 6110720 6400384 6458452 6500390 6710080 7000420 7150429 7221760 7226240 7381088 7700462 7943936 7948864 8000480 8073065 8800528 9084416 9100546 9226360 9394112 9929920 9936080 10400624 10736128 11000660 11200672 11348480 11355520 11742640 12800768 12916904 13000780 13420160 14000840 14300858 14452480 14762176 15400924 15887872 15897728 16000960 16146130 17601056 18201092 18452720 18788224 19251155 19859840 19872160 20801248 22001320 22401344 22711040 22751365 23485280 25601536 25833808 26001560 26840320 28001680 28601716 28904960 29524352 30801848 31795456 32001920 32292260 35202112 35752145 36402184 36905440 37576448 38502310 39719680 39744320 41602496 44002640 44802688 45422080 45502730 46970560 50053003 51667616 52003120 53680640 56003360 57203432 59048704 61603696 63590912 64003840 64584520 70404224 71504290 72804368 73810880 75152896 77004620 79439360 79488640 83204992 88005280 89605376 91005460 93941120 100106006 103335232 104006240 112006720 114406864 118097408 123207392 128007680 129169040 140808448 143008580 145608736 147621760 154009240 158977280 166409984 176010560 179210752 182010920 187882240 200212012 206670464 208012480 224013440 228813728 246414784 250265015 258338080 281616896 286017160 291217472 295243520 308018480 317954560 332819968 352021120 364021840 375764480 400424024 413340928 416024960 448026880 457627456 492829568 500530030 516676160 572034320 582434944 590487040 616036960 704042240 728043680 800848048 826681856 832049920 896053760 915254912 985659136 1001060060 1033352320 1144068640 1164869888 1232073920 1408084480 1456087360 1601696096 1664099840 1830509824 1971318272 2002120120 2066704640 2288137280 2329739776 2464147840 2912174720 3203392192 3661019648 4004240240 4133409280 4576274560 4928295680 5824349440 6406784384 8008480480 9152549120 9856591360 11648698880 12813568768 16016960960 18305098240 25627137536 32033921920 64067843840 128135687680
• Sum of all divisors σ(n): 426068729856
• Sum of proper divisors (its aliquot sum) s(n): 297933042176
• 128135687680 is an abundant number, because the sum of its proper divisors (297933042176) is greater than itself. Its abundance is 169797354496

Bases of 128135687680

• Binary: 1110111010101011110110110111000000000₂
• Hexadecimal: 0x1DD57B6E00
• Base-36: 1MV4OHDS

Squares and roots of 128135687680

• 128135687680 squared (128135687680²) is 16418754457226503782400
• 128135687680 cubed (128135687680³) is 2103828393225783207679945080832000
• The square root of 128135687680 is 357960.4554695951
• The cube root of 128135687680 is 5041.4643599129

Scales and comparisons

• 128,135,687,680 seconds is equal to 4,074 years, 16 weeks, 3 days, 22 hours, 34 minutes, 40 seconds.
• To count from 1 to 128,135,687,680 would take you about eight thousand, one hundred forty-eight 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 128135687680 cubic inches would be around 420.1 feet tall.

Recreational maths with 128135687680

• 128135687680 backwards is 086786531821
• 128135687680 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128135687680's digits is 55
• More coming soon!