1997839620

Names of 1997839620

• Cardinal: 1997839620 can be written as One billion, nine hundred ninety-seven million, eight hundred thirty-nine thousand, six hundred twenty.

Scientific notation

• Scientific notation: 1.99783962 × 10⁹

Factors of 1997839620

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 744

Divisors of 1997839620

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 54 60 63 70 84 90 105 108 126 135 140 180 189 210 252 270 315 378 420 540 630 727 756 945 1260 1454 1890 2181 2908 3635 3780 4362 5089 6543 7270 8724 10178 10905 13086 14540 15267 19629 20356 21810 25445 26172 30534 32715 39258 43620 45801 50890 61068 65430 76335 78516 91602 98145 101780 130860 137403 152670 183204 196290 229005 274806 305340 392580 458010 528529 549612 687015 916020 1057058 1374030 1585587 2114116 2642645 2748060 3171174 3699703 4756761 5285290 6342348 7399406 7927935 9513522 10570580 11099109 14270283 14798812 15855870 18498515 19027044 22198218 23783805 28540566 31711740 33297327 36997030 44396436 47567610 55495545 57081132 66594654 71351415 73994060 95135220 99891981 110991090 133189308 142702830 166486635 199783962 221982180 285405660 332973270 399567924 499459905 665946540 998919810 1997839620
• Sum of all divisors σ(n): 7113214080
• Sum of proper divisors (its aliquot sum) s(n): 5115374460
• 1997839620 is an abundant number, because the sum of its proper divisors (5115374460) is greater than itself. Its abundance is 3117534840

Bases of 1997839620

• Binary: 1110111000101001001110100000100₂
• Hexadecimal: 0x77149D04
• Base-36: X1GMX0

Squares and roots of 1997839620

• 1997839620 squared (1997839620²) is 3991363147241744400
• 1997839620 cubed (1997839620³) is 7974103433367450680233128000
• The square root of 1997839620 is 44697.1992411157
• The cube root of 1997839620 is 1259.4672350805

Scales and comparisons

• 1,997,839,620 seconds is equal to 63 years, 27 weeks, 2 days, 3 hours, 27 minutes.
• To count from 1 to 1,997,839,620 would take you about one hundred twenty-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 1997839620 cubic inches would be around 105 feet tall.

Recreational maths with 1997839620

• 1997839620 backwards is 0269387991
• 1997839620 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1997839620's digits is 54
• More coming soon!