20072745

Names of 20072745

• Cardinal: 20072745 can be written as Twenty million, seventy-two thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 2.0072745 × 10⁷

Factors of 20072745

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1957

Divisors of 20072745

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 7 9 11 15 21 27 33 35 45 55 63 77 99 105 135 165 189 231 297 315 385 495 693 945 1155 1485 1931 2079 3465 5793 9655 10395 13517 17379 21241 28965 40551 52137 63723 67585 86895 106205 121653 148687 191169 202755 260685 318615 364959 446061 573507 608265 743435 955845 1338183 1824795 2230305 2867535 4014549 6690915 20072745
• Sum of all divisors σ(n): 44513280
• Sum of proper divisors (its aliquot sum) s(n): 24440535
• 20072745 is an abundant number, because the sum of its proper divisors (24440535) is greater than itself. Its abundance is 4367790

Bases of 20072745

• Binary: 1001100100100100100101001₂
• Hexadecimal: 0x1324929
• Base-36: BY889

Squares and roots of 20072745

• 20072745 squared (20072745²) is 402915091835025
• 20072745 cubed (20072745³) is 8087611895056038893625
• The square root of 20072745 is 4480.2617111057
• The cube root of 20072745 is 271.7704639727

Scales and comparisons

• 20,072,745 seconds is equal to 33 weeks, 1 day, 7 hours, 45 minutes, 45 seconds.
• To count from 1 to 20,072,745 would take you about forty-nine 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 20072745 cubic inches would be around 22.6 feet tall.

Recreational maths with 20072745

• 20072745 backwards is 54727002
• 20072745 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20072745's digits is 27
• More coming soon!