30394728

Names of 30394728

• Cardinal: 30394728 can be written as Thirty million, three hundred ninety-four thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 3.0394728 × 10⁷

Factors of 30394728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4664

Divisors of 30394728

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 28 36 39 42 52 56 63 72 78 84 91 104 117 126 156 168 182 234 252 273 312 364 468 504 546 728 819 936 1092 1638 2184 3276 4639 6552 9278 13917 18556 27834 32473 37112 41751 55668 60307 64946 83502 97419 111336 120614 129892 167004 180921 194838 241228 259784 292257 334008 361842 389676 422149 482456 542763 584514 723684 779352 844298 1085526 1169028 1266447 1447368 1688596 2171052 2338056 2532894 3377192 3799341 4342104 5065788 7598682 10131576 15197364 30394728
• Sum of all divisors σ(n): 101337600
• Sum of proper divisors (its aliquot sum) s(n): 70942872
• 30394728 is an abundant number, because the sum of its proper divisors (70942872) is greater than itself. Its abundance is 40548144

Bases of 30394728

• Binary: 1110011111100100101101000₂
• Hexadecimal: 0x1CFC968
• Base-36: I3GQ0

Squares and roots of 30394728

• 30394728 squared (30394728²) is 923839490193984
• 30394728 cubed (30394728³) is 28079850020104810916352
• The square root of 30394728 is 5513.1413912579
• The cube root of 30394728 is 312.0801076353

Scales and comparisons

• 30,394,728 seconds is equal to 50 weeks, 1 day, 18 hours, 58 minutes, 48 seconds.
• To count from 1 to 30,394,728 would take you about twenty-three 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 30394728 cubic inches would be around 26 feet tall.

Recreational maths with 30394728

• 30394728 backwards is 82749303
• 30394728 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30394728's digits is 36
• More coming soon!