128446791240

Names of 128446791240

• Cardinal: 128446791240 can be written as One hundred twenty-eight billion, four hundred forty-six million, seven hundred ninety-one thousand, two hundred forty.

Scientific notation

• Scientific notation: 1.2844679124 × 10¹¹

Factors of 128446791240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 18219

Divisors of 128446791240

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 43 60 86 120 129 172 215 258 344 430 516 645 860 1032 1290 1493 1720 2580 2986 4479 5160 5972 7465 8958 11944 14930 16673 17916 22395 29860 33346 35832 44790 50019 59720 64199 66692 83365 89580 100038 128398 133384 166730 179160 192597 200076 250095 256796 320995 333460 385194 400152 500190 513592 641990 666920 716939 770388 962985 1000380 1283980 1433878 1540776 1925970 2000760 2150817 2567960 2867756 3584695 3851940 4301634 5735512 7169390 7703880 8603268 10754085 14338780 17206536 21508170 24892789 28677560 43016340 49785578 74678367 86032680 99571156 124463945 149356734 199142312 248927890 298713468 373391835 497855780 597426936 746783670 995711560 1070389927 1493567340 2140779854 2987134680 3211169781 4281559708 5351949635 6422339562 8563119416 10703899270 12844679124 16055848905 21407798540 25689358248 32111697810 42815597080 64223395620 128446791240
• Sum of all divisors σ(n): 394589543040
• Sum of proper divisors (its aliquot sum) s(n): 266142751800
• 128446791240 is an abundant number, because the sum of its proper divisors (266142751800) is greater than itself. Its abundance is 137695960560

Bases of 128446791240

• Binary: 1110111101000000001100111111001001000₂
• Hexadecimal: 0x1DE8067E48
• Base-36: 1N09WIFC

Squares and roots of 128446791240

• 128446791240 squared (128446791240²) is 16498578179852140737600
• 128446791240 cubed (128446791240³) is 2119189427224287095389606818624000
• The square root of 128446791240 is 358394.7422047371
• The cube root of 128446791240 is 5045.5411577603

Scales and comparisons

• 128,446,791,240 seconds is equal to 4,084 years, 10 weeks, 6 days, 16 hours, 14 minutes.
• To count from 1 to 128,446,791,240 would take you about eight thousand, one hundred sixty-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 128446791240 cubic inches would be around 420.5 feet tall.

Recreational maths with 128446791240

• 128446791240 backwards is 042197644821
• The number of decimal digits it has is: 12
• The sum of 128446791240's digits is 48
• More coming soon!