128264521728

Names of 128264521728

• Cardinal: 128264521728 can be written as One hundred twenty-eight billion, two hundred sixty-four million, five hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.28264521728 × 10¹¹

Factors of 128264521728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1183

Divisors of 128264521728

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 23 24 28 32 42 46 48 56 64 69 84 92 96 112 127 128 138 161 168 184 192 224 254 256 276 322 336 368 381 384 448 483 508 512 552 644 672 736 762 768 889 896 966 1016 1021 1024 1104 1288 1344 1472 1524 1536 1778 1792 1932 2032 2042 2048 2208 2576 2667 2688 2921 2944 3048 3063 3072 3556 3584 3864 4064 4084 4416 5152 5334 5376 5842 5888 6096 6126 6144 7112 7147 7168 7728 8128 8168 8763 8832 10304 10668 10752 11684 11776 12192 12252 14224 14294 14336 15456 16256 16336 17526 17664 20447 20608 21336 21441 21504 23368 23483 23552 24384 24504 28448 28588 30912 32512 32672 35052 35328 40894 41216 42672 42882 43008 46736 46966 47104 48768 49008 56896 57176 61341 61824 65024 65344 70104 70449 70656 81788 82432 85344 85764 93472 93932 97536 98016 113792 114352 122682 123648 129667 130048 130688 140208 140898 141312 163576 164381 164864 170688 171528 186944 187864 195072 196032 227584 228704 245364 247296 259334 260096 261376 280416 281796 327152 328762 329728 341376 343056 373888 375728 389001 390144 392064 455168 457408 490728 493143 494592 518668 522752 560832 563592 654304 657524 682752 686112 747776 751456 778002 780288 784128 907669 910336 914816 981456 986286 989184 1037336 1045504 1121664 1127184 1308608 1315048 1365504 1372224 1495552 1502912 1556004 1568256 1815338 1820672 1829632 1962912 1972572 2074672 2091008 2243328 2254368 2617216 2630096 2723007 2731008 2744448 2982341 2991104 3005824 3112008 3136512 3630676 3659264 3925824 3945144 4149344 4486656 4508736 5234432 5260192 5446014 5462016 5488896 5964682 5982208 6011648 6224016 6273024 7261352 7318528 7851648 7890288 8298688 8947023 8973312 9017472 10468864 10520384 10892028 10977792 11929364 12023296 12448032 14522704 14637056 15703296 15780576 16597376 17894046 17946624 18034944 20876387 20937728 21040768 21784056 21955584 23858728 24046592 24896064 29045408 31406592 31561152 33194752 35788092 36069888 41752774 41875456 42081536 43568112 43911168 47717456 48093184 49792128 58090816 62629161 62813184 63122304 66389504 71576184 72139776 83505548 84163072 87136224 95434912 99584256 116181632 125258322 125626368 126244608 132779008 143152368 144279552 167011096 168326144 174272448 190869824 199168512 232363264 250516644 252489216 265558016 286304736 334022192 336652288 348544896 381739648 398337024 464726528 501033288 504978432 572609472 668044384 697089792 763479296 796674048 929453056 1002066576 1009956864 1145218944 1336088768 1394179584 1526958592 1858906112 2004133152 2290437888 2672177536 2788359168 3053917184 4008266304 4580875776 5344355072 5576718336 6107834368 8016532608 9161751552 10688710144 16033065216 18323503104 21377420288 32066130432 42754840576 64132260864 128264521728
• Sum of all divisors σ(n): 411411087360
• Sum of proper divisors (its aliquot sum) s(n): 283146565632
• 128264521728 is an abundant number, because the sum of its proper divisors (283146565632) is greater than itself. Its abundance is 154882043904

Bases of 128264521728

• Binary: 1110111011101001010010100100000000000₂
• Hexadecimal: 0x1DDD294800
• Base-36: 1MX9DUDC

Squares and roots of 128264521728

• 128264521728 squared (128264521728²) is 16451787534112584105984
• 128264521728 cubed (128264521728³) is 2110180659633623085260212222820352
• The square root of 128264521728 is 358140.3659572595
• The cube root of 128264521728 is 5043.1534409969

Scales and comparisons

• 128,264,521,728 seconds is equal to 4,078 years, 21 weeks, 4 days, 1 hour, 48 minutes, 48 seconds.
• To count from 1 to 128,264,521,728 would take you about eight thousand, one hundred fifty-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 128264521728 cubic inches would be around 420.3 feet tall.

Recreational maths with 128264521728

• 128264521728 backwards is 827125462821
• 128264521728 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128264521728's digits is 48
• More coming soon!