30689680

Names of 30689680

• Cardinal: 30689680 can be written as Thirty million, six hundred eighty-nine thousand, six hundred eighty.

Scientific notation

• Scientific notation: 3.068968 × 10⁷

Factors of 30689680

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7843

Divisors of 30689680

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 392 490 560 784 980 1960 3920 7829 15658 31316 39145 54803 62632 78290 109606 125264 156580 219212 274015 313160 383621 438424 548030 626320 767242 876848 1096060 1534484 1918105 2192120 3068968 3836210 4384240 6137936 7672420 15344840 30689680
• Sum of all divisors σ(n): 83013660
• Sum of proper divisors (its aliquot sum) s(n): 52323980
• 30689680 is an abundant number, because the sum of its proper divisors (52323980) is greater than itself. Its abundance is 21634300

Bases of 30689680

• Binary: 1110101000100100110010000₂
• Hexadecimal: 0x1D44990
• Base-36: I9SB4

Squares and roots of 30689680

• 30689680 squared (30689680²) is 941856458502400
• 30689680 cubed (30689680³) is 28905273317371935232000
• The square root of 30689680 is 5539.8267120913
• The cube root of 30689680 is 313.0863402351

Scales and comparisons

• 30,689,680 seconds is equal to 50 weeks, 5 days, 4 hours, 54 minutes, 40 seconds.
• To count from 1 to 30,689,680 would take you about twenty-four 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 30689680 cubic inches would be around 26.1 feet tall.

Recreational maths with 30689680

• 30689680 backwards is 08698603
• 30689680 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30689680's digits is 40
• More coming soon!