20679990

Names of 20679990

• Cardinal: 20679990 can be written as Twenty million, six hundred seventy-nine thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.067999 × 10⁷

Factors of 20679990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 134

Divisors of 20679990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 10 15 17 23 30 34 41 43 46 51 69 82 85 86 102 115 123 129 138 170 205 215 230 246 255 258 345 391 410 430 510 615 645 690 697 731 782 943 989 1173 1230 1290 1394 1462 1763 1886 1955 1978 2091 2193 2346 2829 2967 3485 3526 3655 3910 4182 4386 4715 4945 5289 5658 5865 5934 6970 7310 8815 9430 9890 10455 10578 10965 11730 14145 14835 16031 16813 17630 20910 21930 26445 28290 29670 29971 32062 33626 40549 48093 50439 52890 59942 80155 81098 84065 89913 96186 100878 121647 149855 160310 168130 179826 202745 240465 243294 252195 299710 405490 449565 480930 504390 608235 689333 899130 1216470 1378666 2067999 3446665 4135998 6893330 10339995 20679990
• Sum of all divisors σ(n): 57480192
• Sum of proper divisors (its aliquot sum) s(n): 36800202
• 20679990 is an abundant number, because the sum of its proper divisors (36800202) is greater than itself. Its abundance is 16120212

Bases of 20679990

• Binary: 1001110111000110100110110₂
• Hexadecimal: 0x13B8D36
• Base-36: CB8S6

Squares and roots of 20679990

• 20679990 squared (20679990²) is 427661986400100
• 20679990 cubed (20679990³) is 8844045602134203999000
• The square root of 20679990 is 4547.5257008621
• The cube root of 20679990 is 274.4838361955

Scales and comparisons

• 20,679,990 seconds is equal to 34 weeks, 1 day, 8 hours, 26 minutes, 30 seconds.
• To count from 1 to 20,679,990 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 20679990 cubic inches would be around 22.9 feet tall.

Recreational maths with 20679990

• 20679990 backwards is 09997602
• The number of decimal digits it has is: 8
• The sum of 20679990's digits is 42
• More coming soon!