138394008

Names of 138394008

• Cardinal: 138394008 can be written as One hundred thirty-eight million, three hundred ninety-four thousand and eight.

Scientific notation

• Scientific notation: 1.38394008 × 10⁸

Factors of 138394008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 761

Divisors of 138394008

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 17 18 24 27 34 36 51 54 68 72 81 102 108 136 153 162 204 216 289 306 324 408 459 578 612 648 739 867 918 1156 1224 1377 1478 1734 1836 2217 2312 2601 2754 2956 3468 3672 4434 5202 5508 5912 6651 6936 7803 8868 10404 11016 12563 13302 15606 17736 19953 20808 23409 25126 26604 31212 37689 39906 46818 50252 53208 59859 62424 75378 79812 93636 100504 113067 119718 150756 159624 187272 213571 226134 239436 301512 339201 427142 452268 478872 640713 678402 854284 904536 1017603 1281426 1356804 1708568 1922139 2035206 2562852 2713608 3844278 4070412 5125704 5766417 7688556 8140824 11532834 15377112 17299251 23065668 34598502 46131336 69197004 138394008
• Sum of all divisors σ(n): 412331700
• Sum of proper divisors (its aliquot sum) s(n): 273937692
• 138394008 is an abundant number, because the sum of its proper divisors (273937692) is greater than itself. Its abundance is 135543684

Bases of 138394008

• Binary: 1000001111111011100110011000₂
• Hexadecimal: 0x83FB998
• Base-36: 2AE9I0

Squares and roots of 138394008

• 138394008 squared (138394008²) is 19152901450304064
• 138394008 cubed (138394008³) is 2650646796536592235648512
• The square root of 138394008 is 11764.0982654857
• The cube root of 138394008 is 517.2562683383

Scales and comparisons

• 138,394,008 seconds is equal to 4 years, 20 weeks, 5 days, 18 hours, 46 minutes, 48 seconds.
• To count from 1 to 138,394,008 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 138394008 cubic inches would be around 43.1 feet tall.

Recreational maths with 138394008

• 138394008 backwards is 800493831
• 138394008 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 138394008's digits is 36
• More coming soon!