6440000

Names of 6440000

• Cardinal: 6440000 can be written as Six million, four hundred forty thousand.

Scientific notation

• Scientific notation: 6.44 × 10⁶

Factors of 6440000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 37

Divisors of 6440000

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 23 25 28 32 35 40 46 50 56 64 70 80 92 100 112 115 125 140 160 161 175 184 200 224 230 250 280 320 322 350 368 400 448 460 500 560 575 625 644 700 736 800 805 875 920 1000 1120 1150 1250 1288 1400 1472 1600 1610 1750 1840 2000 2240 2300 2500 2576 2800 2875 3220 3500 3680 4000 4025 4375 4600 5000 5152 5600 5750 6440 7000 7360 8000 8050 8750 9200 10000 10304 11200 11500 12880 14000 14375 16100 17500 18400 20000 20125 23000 25760 28000 28750 32200 35000 36800 40000 40250 46000 51520 56000 57500 64400 70000 80500 92000 100625 115000 128800 140000 161000 184000 201250 230000 257600 280000 322000 402500 460000 644000 805000 920000 1288000 1610000 3220000 6440000
• Sum of all divisors σ(n): 19043904
• Sum of proper divisors (its aliquot sum) s(n): 12603904
• 6440000 is an abundant number, because the sum of its proper divisors (12603904) is greater than itself. Its abundance is 6163904

Bases of 6440000

• Binary: 11000100100010001000000₂
• Hexadecimal: 0x624440
• Base-36: 3U14W

Squares and roots of 6440000

• 6440000 squared (6440000²) is 41473600000000
• 6440000 cubed (6440000³) is 267089984000000000000
• The square root of 6440000 is 2537.7155080899
• The cube root of 6440000 is 186.0495493691

Scales and comparisons

• 6,440,000 seconds is equal to 10 weeks, 4 days, 12 hours, 53 minutes, 20 seconds.
• To count from 1 to 6,440,000 would take you about fifteen 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 6440000 cubic inches would be around 15.5 feet tall.

Recreational maths with 6440000

• 6440000 backwards is 0000446
• 6440000 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 6440000's digits is 14
• More coming soon!