3997405640

Names of 3997405640

• Cardinal: 3997405640 can be written as Three billion, nine hundred ninety-seven million, four hundred five thousand, six hundred forty.

Scientific notation

• Scientific notation: 3.99740564 × 10⁹

Factors of 3997405640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2750

Divisors of 3997405640

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 20 40 61 122 244 305 488 610 941 1220 1741 1882 2440 3482 3764 4705 6964 7528 8705 9410 13928 17410 18820 34820 37640 57401 69640 106201 114802 212402 229604 287005 424804 459208 531005 574010 849608 1062010 1148020 1638281 2124020 2296040 3276562 4248040 6553124 8191405 13106248 16382810 32765620 65531240 99935141 199870282 399740564 499675705 799481128 999351410 1998702820 3997405640
• Sum of all divisors σ(n): 9156579120
• Sum of proper divisors (its aliquot sum) s(n): 5159173480
• 3997405640 is an abundant number, because the sum of its proper divisors (5159173480) is greater than itself. Its abundance is 1161767840

Bases of 3997405640

• Binary: 11101110010000111001000111001000₂
• Hexadecimal: 0xEE4391C8
• Base-36: 1U3Y9XK

Squares and roots of 3997405640

• 3997405640 squared (3997405640²) is 15979251850703809600
• 3997405640 cubed (3997405640³) is 63875551470983846464526144000
• The square root of 3997405640 is 63225.0396599325
• The cube root of 3997405640 is 1587.0577869287

Scales and comparisons

• 3,997,405,640 seconds is equal to 127 years, 5 weeks, 3 days, 6 hours, 27 minutes, 20 seconds.
• To count from 1 to 3,997,405,640 would take you about two hundred fifty-four 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 3997405640 cubic inches would be around 132.3 feet tall.

Recreational maths with 3997405640

• 3997405640 backwards is 0465047993
• The number of decimal digits it has is: 10
• The sum of 3997405640's digits is 47
• More coming soon!