40001640

Names of 40001640

• Cardinal: 40001640 can be written as Forty million, one thousand, six hundred forty.

Scientific notation

• Scientific notation: 4.000164 × 10⁷

Factors of 40001640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 6820

Divisors of 40001640

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 49 56 60 70 84 98 105 120 140 147 168 196 210 245 280 294 392 420 490 588 735 840 980 1176 1470 1960 2940 5880 6803 13606 20409 27212 34015 40818 47621 54424 68030 81636 95242 102045 136060 142863 163272 190484 204090 238105 272120 285726 333347 380968 408180 476210 571452 666694 714315 816360 952420 1000041 1142904 1333388 1428630 1666735 1904840 2000082 2666776 2857260 3333470 4000164 5000205 5714520 6666940 8000328 10000410 13333880 20000820 40001640
• Sum of all divisors σ(n): 139618080
• Sum of proper divisors (its aliquot sum) s(n): 99616440
• 40001640 is an abundant number, because the sum of its proper divisors (99616440) is greater than itself. Its abundance is 59614800

Bases of 40001640

• Binary: 10011000100110000001101000₂
• Hexadecimal: 0x2626068
• Base-36: NTDGO

Squares and roots of 40001640

• 40001640 squared (40001640²) is 1600131202689600
• 40001640 cubed (40001640³) is 64007872322756410944000
• The square root of 40001640 is 6324.6849723919
• The cube root of 40001640 is 341.9998632057

Scales and comparisons

• 40,001,640 seconds is equal to 1 year, 14 weeks, 23 hours, 34 minutes.
• To count from 1 to 40,001,640 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 40001640 cubic inches would be around 28.5 feet tall.

Recreational maths with 40001640

• 40001640 backwards is 04610004
• 40001640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 40001640's digits is 15
• More coming soon!