20992860

Names of 20992860

• Cardinal: 20992860 can be written as Twenty million, nine hundred ninety-two thousand, eight hundred sixty.

Scientific notation

• Scientific notation: 2.099286 × 10⁷

Factors of 20992860

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 16678

Divisors of 20992860

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 16661 33322 49983 66644 83305 99966 116627 149949 166610 199932 233254 249915 299898 333220 349881 466508 499830 583135 599796 699762 749745 999660 1049643 1166270 1399524 1499490 1749405 2099286 2332540 2998980 3498810 4198572 5248215 6997620 10496430 20992860
• Sum of all divisors σ(n): 72779616
• Sum of proper divisors (its aliquot sum) s(n): 51786756
• 20992860 is an abundant number, because the sum of its proper divisors (51786756) is greater than itself. Its abundance is 30793896

Bases of 20992860

• Binary: 1010000000101001101011100₂
• Hexadecimal: 0x140535C
• Base-36: CHY70

Squares and roots of 20992860

• 20992860 squared (20992860²) is 440700170979600
• 20992860 cubed (20992860³) is 9251556991350805656000
• The square root of 20992860 is 4581.7965908583
• The cube root of 20992860 is 275.8611462867

Scales and comparisons

• 20,992,860 seconds is equal to 34 weeks, 4 days, 23 hours, 21 minutes.
• To count from 1 to 20,992,860 would take you about eleven hours!

  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 20992860 cubic inches would be around 23 feet tall.

Recreational maths with 20992860

• 20992860 backwards is 06829902
• 20992860 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20992860's digits is 36
• More coming soon!