6400000000

Names of 6400000000

• Cardinal: 6400000000 can be written as Six billion, four hundred million.

Scientific notation

• Scientific notation: 6.4 × 10⁹

Factors of 6400000000

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 7

Divisors of 6400000000

• Number of divisors d(n): 135
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1024 1250 1280 1600 2000 2048 2500 2560 3125 3200 4000 4096 5000 5120 6250 6400 8000 8192 10000 10240 12500 12800 15625 16000 16384 20000 20480 25000 25600 31250 32000 40000 40960 50000 51200 62500 64000 78125 80000 81920 100000 102400 125000 128000 156250 160000 200000 204800 250000 256000 312500 320000 390625 400000 409600 500000 512000 625000 640000 781250 800000 1000000 1024000 1250000 1280000 1562500 1600000 2000000 2048000 2500000 2560000 3125000 3200000 4000000 5000000 5120000 6250000 6400000 8000000 10000000 10240000 12500000 12800000 16000000 20000000 25000000 25600000 32000000 40000000 50000000 51200000 64000000 80000000 100000000 128000000 160000000 200000000 256000000 320000000 400000000 640000000 800000000 1280000000 1600000000 3200000000 6400000000
• Sum of all divisors σ(n): 15999503527
• Sum of proper divisors (its aliquot sum) s(n): 9599503527
• 6400000000 is an abundant number, because the sum of its proper divisors (9599503527) is greater than itself. Its abundance is 3199503527

Bases of 6400000000

• Binary: 101111101011110000100000000000000₂
• Hexadecimal: 0x17D784000
• Base-36: 2XUE7LS

Squares and roots of 6400000000

• 6400000000 squared (6400000000²) is 40960000000000000000
• 6400000000 cubed (6400000000³) is 262144000000000000000000000000
• 6400000000 is a perfect square number. Its square root is 80000
• The cube root of 6400000000 is 1856.6355334451

Scales and comparisons

• 6,400,000,000 seconds is equal to 203 years, 26 weeks, 1 hour, 46 minutes, 40 seconds.
• To count from 1 to 6,400,000,000 would take you about four hundred seven years!

  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 6400000000 cubic inches would be around 154.7 feet tall.

Recreational maths with 6400000000

• 6400000000 backwards is 0000000046
• 6400000000 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6400000000's digits is 10
• More coming soon!