128090517321

Names of 128090517321

• Cardinal: 128090517321 can be written as One hundred twenty-eight billion, ninety million, five hundred seventeen thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 1.28090517321 × 10¹¹

Factors of 128090517321

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 18510

Divisors of 128090517321

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 13 17 23 39 51 69 221 299 391 467 663 897 1173 1401 5083 6071 7939 10741 15249 17987 18213 23817 32223 53961 103207 139633 182597 233831 305779 309621 413701 418899 547791 701493 917337 1241103 2373761 3975127 5378113 7032917 7121283 8399929 11925381 16134339 21098751 25199787 91427921 109199077 142798793 193198367 274283763 327597231 428396379 579595101 1856384309 2511578771 3284372239 5569152927 7534736313 9853116717 42696839107 128090517321
• Sum of all divisors σ(n): 203657545728
• Sum of proper divisors (its aliquot sum) s(n): 75567028407
• 128090517321 is a deficient number, because the sum of its proper divisors (75567028407) is less than itself. Its deficiency is 52523488914

Bases of 128090517321

• Binary: 1110111010010110010100010111101001001₂
• Hexadecimal: 0x1DD2CA2F49
• Base-36: 1MUDSBPL

Squares and roots of 128090517321

• 128090517321 squared (128090517321²) is 16407180627561401017041
• 128090517321 cubed (128090517321³) is 2101604254363429286964317226667161
• The square root of 128090517321 is 357897.3558452199
• The cube root of 128090517321 is 5040.8718850567

Scales and comparisons

• 128,090,517,321 seconds is equal to 4,072 years, 45 weeks, 6 days, 3 hours, 15 minutes, 21 seconds.
• To count from 1 to 128,090,517,321 would take you about eight thousand, one hundred forty-five 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 128090517321 cubic inches would be around 420.1 feet tall.

Recreational maths with 128090517321

• 128090517321 backwards is 123715090821
• 128090517321 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128090517321's digits is 39
• More coming soon!