40081020

Names of 40081020

• Cardinal: 40081020 can be written as Forty million, eighty-one thousand and twenty.

Scientific notation

• Scientific notation: 4.008102 × 10⁷

Factors of 40081020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 13650

Divisors of 40081020

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 13633 27266 40899 54532 68165 81798 95431 136330 163596 190862 204495 272660 286293 381724 408990 477155 572586 668017 817980 954310 1145172 1336034 1431465 1908620 2004051 2672068 2862930 3340085 4008102 5725860 6680170 8016204 10020255 13360340 20040510 40081020
• Sum of all divisors σ(n): 130559184
• Sum of proper divisors (its aliquot sum) s(n): 90478164
• 40081020 is an abundant number, because the sum of its proper divisors (90478164) is greater than itself. Its abundance is 50397144

Bases of 40081020

• Binary: 10011000111001011001111100₂
• Hexadecimal: 0x263967C
• Base-36: NV2PO

Squares and roots of 40081020

• 40081020 squared (40081020²) is 1606488164240400
• 40081020 cubed (40081020³) is 64389684240682757208000
• The square root of 40081020 is 6330.9572735883
• The cube root of 40081020 is 342.2259373641

Scales and comparisons

• 40,081,020 seconds is equal to 1 year, 14 weeks, 1 day, 21 hours, 37 minutes.
• To count from 1 to 40,081,020 would take you about forty-seven 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 40081020 cubic inches would be around 28.5 feet tall.

Recreational maths with 40081020

• 40081020 backwards is 02018004
• 40081020 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 40081020's digits is 15
• More coming soon!