20749740

Names of 20749740

• Cardinal: 20749740 can be written as Twenty million, seven hundred forty-nine thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.074974 × 10⁷

Factors of 20749740

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 381

Divisors of 20749740

• 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 66 110 132 149 165 211 220 298 330 422 447 596 633 660 745 844 894 1055 1266 1490 1639 1788 2110 2235 2321 2532 2980 3165 3278 4220 4470 4642 4917 6330 6556 6963 8195 8940 9284 9834 11605 12660 13926 16390 19668 23210 24585 27852 31439 32780 34815 46420 49170 62878 69630 94317 98340 125756 139260 157195 188634 314390 345829 377268 471585 628780 691658 943170 1037487 1383316 1729145 1886340 2074974 3458290 4149948 5187435 6916580 10374870 20749740
• Sum of all divisors σ(n): 64108800
• Sum of proper divisors (its aliquot sum) s(n): 43359060
• 20749740 is an abundant number, because the sum of its proper divisors (43359060) is greater than itself. Its abundance is 22609320

Bases of 20749740

• Binary: 1001111001001110110101100₂
• Hexadecimal: 0x13C9DAC
• Base-36: CCQLO

Squares and roots of 20749740

• 20749740 squared (20749740²) is 430551710067600
• 20749740 cubed (20749740³) is 8933836040458082424000
• The square root of 20749740 is 4555.1882507751
• The cube root of 20749740 is 274.7920852691

Scales and comparisons

• 20,749,740 seconds is equal to 34 weeks, 2 days, 3 hours, 49 minutes.
• To count from 1 to 20,749,740 would take you about fifty-one 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 20749740 cubic inches would be around 22.9 feet tall.

Recreational maths with 20749740

• 20749740 backwards is 04794702
• 20749740 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20749740's digits is 33
• More coming soon!