221509890

Names of 221509890

• Cardinal: 221509890 can be written as Two hundred twenty-one million, five hundred nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.2150989 × 10⁸

Factors of 221509890

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5598

Divisors of 221509890

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 49 54 63 70 81 90 98 105 126 135 147 162 189 210 245 270 294 315 378 405 441 490 567 630 735 810 882 945 1134 1323 1470 1890 2205 2646 2835 3969 4410 5581 5670 6615 7938 11162 13230 16743 19845 27905 33486 39067 39690 50229 55810 78134 83715 100458 117201 150687 167430 195335 234402 251145 273469 301374 351603 390670 452061 502290 546938 586005 703206 753435 820407 904122 1054809 1172010 1367345 1506870 1640814 1758015 2109618 2260305 2461221 2734690 3164427 3516030 4102035 4520610 4922442 5274045 6328854 7383663 8204070 10548090 12306105 14767326 15822135 22150989 24612210 31644270 36918315 44301978 73836630 110754945 221509890
• Sum of all divisors σ(n): 692982972
• Sum of proper divisors (its aliquot sum) s(n): 471473082
• 221509890 is an abundant number, because the sum of its proper divisors (471473082) is greater than itself. Its abundance is 249963192

Bases of 221509890

• Binary: 1101001100111111100100000010₂
• Hexadecimal: 0xD33F902
• Base-36: 3NVQ4I

Squares and roots of 221509890

• 221509890 squared (221509890²) is 49066631367812100
• 221509890 cubed (221509890³) is 10868744116954607811669000
• The square root of 221509890 is 14883.2083234765
• The cube root of 221509890 is 605.0589747397

Scales and comparisons

• 221,509,890 seconds is equal to 7 years, 2 weeks, 1 day, 18 hours, 31 minutes, 30 seconds.
• To count from 1 to 221,509,890 would take you about ten years!

  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 221509890 cubic inches would be around 50.4 feet tall.

Recreational maths with 221509890

• 221509890 backwards is 098905122
• The number of decimal digits it has is: 9
• The sum of 221509890's digits is 36
• More coming soon!