406640

Names of 406640

• Cardinal: 406640 can be written as Four hundred six thousand, six hundred forty.

Scientific notation

• Scientific notation: 4.0664 × 10⁵

Factors of 406640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 60

Divisors of 406640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 13 16 17 20 23 26 34 40 46 52 65 68 80 85 92 104 115 130 136 170 184 208 221 230 260 272 299 340 368 391 442 460 520 598 680 782 884 920 1040 1105 1196 1360 1495 1564 1768 1840 1955 2210 2392 2990 3128 3536 3910 4420 4784 5083 5980 6256 7820 8840 10166 11960 15640 17680 20332 23920 25415 31280 40664 50830 81328 101660 203320 406640
• Sum of all divisors σ(n): 1124928
• Sum of proper divisors (its aliquot sum) s(n): 718288
• 406640 is an abundant number, because the sum of its proper divisors (718288) is greater than itself. Its abundance is 311648

Bases of 406640

• Binary: 1100011010001110000₂
• Hexadecimal: 0x63470
• Base-36: 8PRK

Squares and roots of 406640

• 406640 squared (406640²) is 165356089600
• 406640 cubed (406640³) is 67240400274944000
• The square root of 406640 is 637.6833069793
• The cube root of 406640 is 74.0860940987

Scales and comparisons

• 406,640 seconds is equal to 4 days, 16 hours, 57 minutes, 20 seconds.
• To count from 1 to 406,640 would take you about four days.

  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 406640 cubic inches would be around 6.2 feet tall.

Recreational maths with 406640

• 406640 backwards is 046604
• 406640 is a Harshad number.
• The number of decimal digits it has is: 6
• The sum of 406640's digits is 20
• More coming soon!