28972146

Names of 28972146

• Cardinal: 28972146 can be written as Twenty-eight million, nine hundred seventy-two thousand, one hundred forty-six.

Scientific notation

• Scientific notation: 2.8972146 × 10⁷

Factors of 28972146

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 8406

Divisors of 28972146

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 7 14 21 42 83 166 249 498 581 1162 1743 3486 8311 16622 24933 49866 58177 116354 174531 349062 689813 1379626 2069439 4138878 4828691 9657382 14486073 28972146
• Sum of all divisors σ(n): 67027968
• Sum of proper divisors (its aliquot sum) s(n): 38055822
• 28972146 is an abundant number, because the sum of its proper divisors (38055822) is greater than itself. Its abundance is 9083676

Bases of 28972146

• Binary: 1101110100001010001110010₂
• Hexadecimal: 0x1BA1472
• Base-36: H8Z1U

Squares and roots of 28972146

• 28972146 squared (28972146²) is 839385243845316
• 28972146 cubed (28972146³) is 24318791834932096568136
• The square root of 28972146 is 5382.5780068663
• The cube root of 28972146 is 307.1332874815

Scales and comparisons

• 28,972,146 seconds is equal to 47 weeks, 6 days, 7 hours, 49 minutes, 6 seconds.
• To count from 1 to 28,972,146 would take you about nineteen 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 28972146 cubic inches would be around 25.6 feet tall.

Recreational maths with 28972146

• 28972146 backwards is 64127982
• The number of decimal digits it has is: 8
• The sum of 28972146's digits is 39
• More coming soon!