21440930

Names of 21440930

• Cardinal: 21440930 can be written as Twenty-one million, four hundred forty thousand, nine hundred thirty.

Scientific notation

• Scientific notation: 2.144093 × 10⁷

Factors of 21440930

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 80

Divisors of 21440930

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 5 7 10 14 19 35 38 47 49 70 94 95 98 133 190 235 245 266 329 343 470 490 658 665 686 893 931 1330 1645 1715 1786 1862 2303 2401 3290 3430 4465 4606 4655 4802 6251 6517 8930 9310 11515 12005 12502 13034 16121 23030 24010 31255 32242 32585 43757 45619 62510 65170 80605 87514 91238 112847 161210 218785 225694 228095 306299 437570 456190 564235 612598 1128470 1531495 2144093 3062990 4288186 10720465 21440930
• Sum of all divisors σ(n): 48401280
• Sum of proper divisors (its aliquot sum) s(n): 26960350
• 21440930 is an abundant number, because the sum of its proper divisors (26960350) is greater than itself. Its abundance is 5519420

Bases of 21440930

• Binary: 1010001110010100110100010₂
• Hexadecimal: 0x14729A2
• Base-36: CRJXE

Squares and roots of 21440930

• 21440930 squared (21440930²) is 459713479264900
• 21440930 cubed (21440930³) is 9856684528975172357000
• The square root of 21440930 is 4630.4351847315
• The cube root of 21440930 is 277.8099990475

Scales and comparisons

• 21,440,930 seconds is equal to 35 weeks, 3 days, 3 hours, 48 minutes, 50 seconds.
• To count from 1 to 21,440,930 would take you about five 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 21440930 cubic inches would be around 23.2 feet tall.

Recreational maths with 21440930

• 21440930 backwards is 03904412
• The number of decimal digits it has is: 8
• The sum of 21440930's digits is 23
• More coming soon!