30128340

Names of 30128340

• Cardinal: 30128340 can be written as Thirty million, one hundred twenty-eight thousand, three hundred forty.

Scientific notation

• Scientific notation: 3.012834 × 10⁷

Factors of 30128340

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 451

Divisors of 30128340

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 191 220 239 330 382 478 573 660 717 764 955 956 1146 1195 1434 1910 2101 2292 2390 2629 2865 2868 3585 3820 4202 4780 5258 5730 6303 7170 7887 8404 10505 10516 11460 12606 13145 14340 15774 21010 25212 26290 31515 31548 39435 42020 45649 52580 63030 78870 91298 126060 136947 157740 182596 228245 273894 456490 502139 547788 684735 912980 1004278 1369470 1506417 2008556 2510695 2738940 3012834 5021390 6025668 7532085 10042780 15064170 30128340
• Sum of all divisors σ(n): 92897280
• Sum of proper divisors (its aliquot sum) s(n): 62768940
• 30128340 is an abundant number, because the sum of its proper divisors (62768940) is greater than itself. Its abundance is 32640600

Bases of 30128340

• Binary: 1110010111011100011010100₂
• Hexadecimal: 0x1CBB8D4
• Base-36: HXR6C

Squares and roots of 30128340

• 30128340 squared (30128340²) is 907716871155600
• 30128340 cubed (30128340³) is 27348002517912109704000
• The square root of 30128340 is 5488.9288572543
• The cube root of 30128340 is 311.1657115999

Scales and comparisons

• 30,128,340 seconds is equal to 49 weeks, 5 days, 16 hours, 59 minutes.
• To count from 1 to 30,128,340 would take you about twenty-two 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 30128340 cubic inches would be around 25.9 feet tall.

Recreational maths with 30128340

• 30128340 backwards is 04382103
• The number of decimal digits it has is: 8
• The sum of 30128340's digits is 21
• More coming soon!