30678690

Names of 30678690

• Cardinal: 30678690 can be written as Thirty million, six hundred seventy-eight thousand, six hundred ninety.

Scientific notation

• Scientific notation: 3.067869 × 10⁷

Factors of 30678690

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1207

Divisors of 30678690

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 139 210 278 417 695 834 973 1051 1390 1946 2085 2102 2919 3153 4170 4865 5255 5838 6306 7357 9730 10510 14595 14714 15765 22071 29190 31530 36785 44142 73570 110355 146089 220710 292178 438267 730445 876534 1022623 1460890 2045246 2191335 3067869 4382670 5113115 6135738 10226230 15339345 30678690
• Sum of all divisors σ(n): 84833280
• Sum of proper divisors (its aliquot sum) s(n): 54154590
• 30678690 is an abundant number, because the sum of its proper divisors (54154590) is greater than itself. Its abundance is 23475900

Bases of 30678690

• Binary: 1110101000001111010100010₂
• Hexadecimal: 0x1D41EA2
• Base-36: I9JTU

Squares and roots of 30678690

• 30678690 squared (30678690²) is 941182020116100
• 30678690 cubed (30678690³) is 28874231428715595909000
• The square root of 30678690 is 5538.8347149919
• The cube root of 30678690 is 313.0489636133

Scales and comparisons

• 30,678,690 seconds is equal to 50 weeks, 5 days, 1 hour, 51 minutes, 30 seconds.
• To count from 1 to 30,678,690 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 30678690 cubic inches would be around 26.1 feet tall.

Recreational maths with 30678690

• 30678690 backwards is 09687603
• The number of decimal digits it has is: 8
• The sum of 30678690's digits is 39
• More coming soon!