138821620847

Names of 138821620847

• Cardinal: 138821620847 can be written as One hundred thirty-eight billion, eight hundred twenty-one million, six hundred twenty thousand, eight hundred forty-seven.

Scientific notation

• Scientific notation: 1.38821620847 × 10¹¹

Factors of 138821620847

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1146

Divisors of 138821620847

• Number of divisors d(n): 96
• Complete list of divisors:
  1 7 13 29 49 73 91 113 203 377 511 637 791 911 949 1421 1469 2117 2639 3277 3577 5537 6377 6643 8249 10283 11843 14819 18473 22939 26419 27521 42601 44639 46501 57743 66503 71981 82901 102943 103733 107237 160573 184933 192647 239221 298207 343447 404201 465521 580307 720601 750659 864539 1294531 1338259 1348529 1674547 1928587 2087449 2404129 2985347 3109873 3258647 5044207 5254613 6051773 7514839 9367813 11721829 13500109 16828903 20897429 21769111 25071631 38809511 42362411 52603873 65574691 94500763 97692907 146282003 152383777 175501417 217930331 271666577 368227111 683850349 1228509919 1525512317 1901666039 2833094303 4786952443 10678586219 19831660121 138821620847
• Sum of all divisors σ(n): 184185550080
• Sum of proper divisors (its aliquot sum) s(n): 45363929233
• 138821620847 is a deficient number, because the sum of its proper divisors (45363929233) is less than itself. Its deficiency is 93457691614

Bases of 138821620847

• Binary: 10000001010010011010011101010001101111₂
• Hexadecimal: 0x205269D46F
• Base-36: 1RRUT46N

Squares and roots of 138821620847

• 138821620847 squared (138821620847²) is 19271442414588224997409
• 138821620847 cubed (138821620847³) is 2675292872052760752221039755385423
• The square root of 138821620847 is 372587.7357710529
• The cube root of 138821620847 is 5177.8846384567

Scales and comparisons

• 138,821,620,847 seconds is equal to 4,414 years, 5 weeks, 17 hours, 20 minutes, 47 seconds.
• To count from 1 to 138,821,620,847 would take you about eight thousand, eight hundred twenty-eight 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 138821620847 cubic inches would be around 431.5 feet tall.

Recreational maths with 138821620847

• 138821620847 backwards is 748026128831
• The number of decimal digits it has is: 12
• The sum of 138821620847's digits is 50
• More coming soon!