20992986

Names of 20992986

• Cardinal: 20992986 can be written as Twenty million, nine hundred ninety-two thousand, nine hundred eighty-six.

Scientific notation

• Scientific notation: 2.0992986 × 10⁷

Factors of 20992986

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 147

Divisors of 20992986

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 14 18 19 21 27 37 38 42 54 57 63 74 79 111 114 126 133 158 171 189 222 237 259 266 333 342 378 399 474 513 518 553 666 703 711 777 798 999 1026 1106 1197 1406 1422 1501 1554 1659 1998 2109 2133 2331 2394 2923 3002 3318 3591 4218 4266 4503 4662 4921 4977 5846 6327 6993 7182 8769 9006 9842 9954 10507 12654 13509 13986 14763 14931 17538 18981 20461 21014 26307 27018 29526 29862 31521 37962 40527 40922 44289 52614 55537 61383 63042 78921 81054 88578 94563 111074 122766 132867 157842 166611 184149 189126 265734 283689 333222 368298 388759 499833 552447 567378 777518 999666 1104894 1166277 1499499 2332554 2998998 3498831 6997662 10496493 20992986
• Sum of all divisors σ(n): 58368000
• Sum of proper divisors (its aliquot sum) s(n): 37375014
• 20992986 is an abundant number, because the sum of its proper divisors (37375014) is greater than itself. Its abundance is 16382028

Bases of 20992986

• Binary: 1010000000101001111011010₂
• Hexadecimal: 0x14053DA
• Base-36: CHYAI

Squares and roots of 20992986

• 20992986 squared (20992986²) is 440705461196196
• 20992986 cubed (20992986³) is 9251723577015285881256
• The square root of 20992986 is 4581.8103409023
• The cube root of 20992986 is 275.8616981953

Scales and comparisons

• 20,992,986 seconds is equal to 34 weeks, 4 days, 23 hours, 23 minutes, 6 seconds.
• To count from 1 to 20,992,986 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 20992986 cubic inches would be around 23 feet tall.

Recreational maths with 20992986

• 20992986 backwards is 68929902
• The number of decimal digits it has is: 8
• The sum of 20992986's digits is 45
• More coming soon!