138430080

Names of 138430080

• Cardinal: 138430080 can be written as One hundred thirty-eight million, four hundred thirty thousand and eighty.

Scientific notation

• Scientific notation: 1.3843008 × 10⁸

Factors of 138430080

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 8021

Divisors of 138430080

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 270 288 320 360 384 432 480 540 576 640 720 864 960 1080 1152 1440 1728 1920 2160 2880 3456 4320 5760 8011 8640 16022 17280 24033 32044 40055 48066 64088 72099 80110 96132 120165 128176 144198 160220 192264 216297 240330 256352 288396 320440 360495 384528 432594 480660 512704 576792 640880 720990 769056 865188 961320 1025408 1081485 1153584 1281760 1441980 1538112 1730376 1922640 2162970 2307168 2563520 2883960 3076224 3460752 3845280 4325940 4614336 5127040 5767920 6921504 7690560 8651880 9228672 11535840 13843008 15381120 17303760 23071680 27686016 34607520 46143360 69215040 138430080
• Sum of all divisors σ(n): 490334400
• Sum of proper divisors (its aliquot sum) s(n): 351904320
• 138430080 is an abundant number, because the sum of its proper divisors (351904320) is greater than itself. Its abundance is 213474240

Bases of 138430080

• Binary: 1000010000000100011010000000₂
• Hexadecimal: 0x8404680
• Base-36: 2AF1C0

Squares and roots of 138430080

• 138430080 squared (138430080²) is 19162887048806400
• 138430080 cubed (138430080³) is 2652719987197233856512000
• The square root of 138430080 is 11765.6313047791
• The cube root of 138430080 is 517.3012048871

Scales and comparisons

• 138,430,080 seconds is equal to 4 years, 20 weeks, 6 days, 4 hours, 48 minutes.
• To count from 1 to 138,430,080 would take you about 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 138430080 cubic inches would be around 43.1 feet tall.

Recreational maths with 138430080

• 138430080 backwards is 080034831
• 138430080 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138430080's digits is 27
• More coming soon!