1397995740

Names of 1397995740

• Cardinal: 1397995740 can be written as One billion, three hundred ninety-seven million, nine hundred ninety-five thousand, seven hundred forty.

Scientific notation

• Scientific notation: 1.39799574 × 10⁹

Factors of 1397995740

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1619

Divisors of 1397995740

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 1609 3218 4827 6436 8045 9654 14481 16090 19308 24135 28962 32180 43443 48270 57924 72405 86886 96540 144810 173772 217215 289620 434430 868860 2588881 5177762 7766643 10355524 12944405 15533286 23299929 25888810 31066572 38833215 46599858 51777620 69899787 77666430 93199716 116499645 139799574 155332860 232999290 279599148 349498935 465998580 698997870 1397995740
• Sum of all divisors σ(n): 4352024880
• Sum of proper divisors (its aliquot sum) s(n): 2954029140
• 1397995740 is an abundant number, because the sum of its proper divisors (2954029140) is greater than itself. Its abundance is 1556033400

Bases of 1397995740

• Binary: 1010011010100111011100011011100₂
• Hexadecimal: 0x5353B8DC
• Base-36: N4BWF0

Squares and roots of 1397995740

• 1397995740 squared (1397995740²) is 1954392089058147600
• 1397995740 cubed (1397995740³) is 2732231814792990957091224000
• The square root of 1397995740 is 37389.7812242865
• The cube root of 1397995740 is 1118.1548434355

Scales and comparisons

• 1,397,995,740 seconds is equal to 44 years, 23 weeks, 3 days, 12 hours, 9 minutes.
• To count from 1 to 1,397,995,740 would take you about eighty-eight 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 1397995740 cubic inches would be around 93.2 feet tall.

Recreational maths with 1397995740

• 1397995740 backwards is 0475997931
• 1397995740 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1397995740's digits is 54
• More coming soon!