20380815

Names of 20380815

• Cardinal: 20380815 can be written as Twenty million, three hundred eighty thousand, eight hundred fifteen.

Scientific notation

• Scientific notation: 2.0380815 × 10⁷

Factors of 20380815

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 107

Divisors of 20380815

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 49 63 65 79 81 91 105 117 135 147 189 195 237 245 273 315 351 395 405 441 455 553 567 585 637 711 735 819 945 1027 1053 1185 1323 1365 1659 1755 1911 2133 2205 2457 2765 2835 3081 3185 3555 3871 3969 4095 4977 5135 5265 5733 6399 6615 7189 7371 8295 9243 9555 10665 11613 12285 14931 15405 17199 19355 19845 21567 24885 27729 28665 31995 34839 35945 36855 44793 46215 50323 51597 58065 64701 74655 83187 85995 104517 107835 138645 150969 174195 194103 223965 251615 257985 313551 323505 415935 452907 522585 582309 754845 970515 1358721 1567755 2264535 2911545 4076163 6793605 20380815
• Sum of all divisors σ(n): 46347840
• Sum of proper divisors (its aliquot sum) s(n): 25967025
• 20380815 is an abundant number, because the sum of its proper divisors (25967025) is greater than itself. Its abundance is 5586210

Bases of 20380815

• Binary: 1001101101111110010001111₂
• Hexadecimal: 0x136FC8F
• Base-36: C4TXR

Squares and roots of 20380815

• 20380815 squared (20380815²) is 415377620064225
• 20380815 cubed (20380815³) is 8465734429669257843375
• The square root of 20380815 is 4514.5116014913
• The cube root of 20380815 is 273.1537595369

Scales and comparisons

• 20,380,815 seconds is equal to 33 weeks, 4 days, 21 hours, 20 minutes, 15 seconds.
• To count from 1 to 20,380,815 would take you about fifty weeks!

  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 20380815 cubic inches would be around 22.8 feet tall.

Recreational maths with 20380815

• 20380815 backwards is 51808302
• 20380815 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20380815's digits is 27
• More coming soon!