128412235440

Names of 128412235440

• Cardinal: 128412235440 can be written as One hundred twenty-eight billion, four hundred twelve million, two hundred thirty-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.2841223544 × 10¹¹

Factors of 128412235440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 19816713

Divisors of 128412235440

• Number of divisors d(n): 100
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 270 324 360 405 432 540 648 720 810 1080 1296 1620 2160 3240 6480 19816703 39633406 59450109 79266812 99083515 118900218 158533624 178350327 198167030 237800436 297250545 317067248 356700654 396334060 475600872 535050981 594501090 713401308 792668120 891751635 951201744 1070101962 1189002180 1426802616 1585336240 1605152943 1783503270 2140203924 2378004360 2675254905 2853605232 3210305886 3567006540 4280407848 4756008720 5350509810 6420611772 7134013080 8025764715 8560815696 10701019620 12841223544 14268026160 16051529430 21402039240 25682447088 32103058860 42804078480 64206117720 128412235440
• Sum of all divisors σ(n): 445994740224
• Sum of proper divisors (its aliquot sum) s(n): 317582504784
• 128412235440 is an abundant number, because the sum of its proper divisors (317582504784) is greater than itself. Its abundance is 189170269344

Bases of 128412235440

• Binary: 1110111100101111101110011011010110000₂
• Hexadecimal: 0x1DE5F736B0
• Base-36: 1MZPBV00

Squares and roots of 128412235440

• 128412235440 squared (128412235440²) is 16489702210697991993600
• 128412235440 cubed (128412235440³) is 2117479522615639034617398173184000
• The square root of 128412235440 is 358346.5298283215
• The cube root of 128412235440 is 5045.0886530121

Scales and comparisons

• 128,412,235,440 seconds is equal to 4,083 years, 5 weeks, 5 days, 17 hours, 24 minutes.
• To count from 1 to 128,412,235,440 would take you about eight thousand, one hundred sixty-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 128412235440 cubic inches would be around 420.4 feet tall.

Recreational maths with 128412235440

• 128412235440 backwards is 044532214821
• 128412235440 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128412235440's digits is 36
• More coming soon!