128701690880

Names of 128701690880

• Cardinal: 128701690880 can be written as One hundred twenty-eight billion, seven hundred one million, six hundred ninety thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 1.2870169088 × 10¹¹

Factors of 128701690880

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 513015

Divisors of 128701690880

• Number of divisors d(n): 132
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 128 140 160 196 224 245 256 280 320 392 448 490 512 560 640 784 896 980 1024 1120 1280 1568 1792 1960 2240 2560 3136 3584 3920 4480 5120 6272 7168 7840 8960 12544 15680 17920 25088 31360 35840 50176 62720 125440 250880 513001 1026002 2052004 2565005 3591007 4104008 5130010 7182014 8208016 10260020 14364028 16416032 17955035 20520040 25137049 28728056 32832064 35910070 41040080 50274098 57456112 65664128 71820140 82080160 100548196 114912224 125685245 131328256 143640280 164160320 201096392 229824448 251370490 262656512 287280560 328320640 402192784 459648896 502740980 525313024 574561120 656641280 804385568 919297792 1005481960 1149122240 1313282560 1608771136 1838595584 2010963920 2298244480 2626565120 3217542272 3677191168 4021927840 4596488960 6435084544 8043855680 9192977920 12870169088 16087711360 18385955840 25740338176 32175422720 64350845440 128701690880
• Sum of all divisors σ(n): 359139362148
• Sum of proper divisors (its aliquot sum) s(n): 230437671268
• 128701690880 is an abundant number, because the sum of its proper divisors (230437671268) is greater than itself. Its abundance is 101735980388

Bases of 128701690880

• Binary: 1110111110111001101111111010000000000₂
• Hexadecimal: 0x1DF737F400
• Base-36: 1N4HNW8W

Squares and roots of 128701690880

• 128701690880 squared (128701690880²) is 16564125235371075174400
• 128701690880 cubed (128701690880³) is 2131830925740335359188870889472000
• The square root of 128701690880 is 358750.1789267847
• The cube root of 128701690880 is 5048.8765383733

Scales and comparisons

• 128,701,690,880 seconds is equal to 4,092 years, 16 weeks, 2 days, 21 hours, 41 minutes, 20 seconds.
• To count from 1 to 128,701,690,880 would take you about eight thousand, one hundred eighty-four 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 128701690880 cubic inches would be around 420.7 feet tall.

Recreational maths with 128701690880

• 128701690880 backwards is 088096107821
• The number of decimal digits it has is: 12
• The sum of 128701690880's digits is 50
• More coming soon!