128628189950

Names of 128628189950

• Cardinal: 128628189950 can be written as One hundred twenty-eight billion, six hundred twenty-eight million, one hundred eighty-nine thousand, nine hundred fifty.

Scientific notation

• Scientific notation: 1.2862818995 × 10¹¹

Factors of 128628189950

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 491092

Divisors of 128628189950

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 5 10 13 25 26 31 50 62 65 130 155 169 310 325 338 403 650 775 806 845 1550 1690 2015 4030 4225 5239 8450 10075 10478 20150 26195 52390 130975 261950 491041 982082 2455205 4910410 6383533 12276025 12767066 15222271 24552050 30444542 31917665 63835330 76111355 82985929 152222710 159588325 165971858 197889523 319176650 380556775 395779046 414929645 761113550 829859290 989447615 1978895230 2074648225 2572563799 4149296450 4947238075 5145127598 9894476150 12862818995 25725637990 64314094975 128628189950
• Sum of all divisors σ(n): 267425401536
• Sum of proper divisors (its aliquot sum) s(n): 138797211586
• 128628189950 is an abundant number, because the sum of its proper divisors (138797211586) is greater than itself. Its abundance is 10169021636

Bases of 128628189950

• Binary: 1110111110010110101100110101011111110₂
• Hexadecimal: 0x1DF2D66AFE
• Base-36: 1N39WIKE

Squares and roots of 128628189950

• 128628189950 squared (128628189950²) is 16545211249813281002500
• 128628189950 cubed (128628189950³) is 2128180575403859610822296424875000
• The square root of 128628189950 is 358647.7240273525
• The cube root of 128628189950 is 5047.9152254727

Scales and comparisons

• 128,628,189,950 seconds is equal to 4,089 years, 50 weeks, 6 days, 4 hours, 45 minutes, 50 seconds.
• To count from 1 to 128,628,189,950 would take you about eight thousand, one hundred seventy-nine 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 128628189950 cubic inches would be around 420.7 feet tall.

Recreational maths with 128628189950

• 128628189950 backwards is 059981826821
• The number of decimal digits it has is: 12
• The sum of 128628189950's digits is 59
• More coming soon!