21093912

Names of 21093912

• Cardinal: 21093912 can be written as Twenty-one million, ninety-three thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 2.1093912 × 10⁷

Factors of 21093912

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2005

Divisors of 21093912

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 49 54 56 63 72 84 98 108 126 147 168 189 196 216 252 294 378 392 441 504 588 756 882 1176 1323 1512 1764 1993 2646 3528 3986 5292 5979 7972 10584 11958 13951 15944 17937 23916 27902 35874 41853 47832 53811 55804 71748 83706 97657 107622 111608 125559 143496 167412 195314 215244 251118 292971 334824 376677 390628 430488 502236 585942 753354 781256 878913 1004472 1171884 1506708 1757826 2343768 2636739 3013416 3515652 5273478 7031304 10546956 21093912
• Sum of all divisors σ(n): 68194800
• Sum of proper divisors (its aliquot sum) s(n): 47100888
• 21093912 is an abundant number, because the sum of its proper divisors (47100888) is greater than itself. Its abundance is 26006976

Bases of 21093912

• Binary: 1010000011101111000011000₂
• Hexadecimal: 0x141DE18
• Base-36: CK460

Squares and roots of 21093912

• 21093912 squared (21093912²) is 444953123463744
• 21093912 cubed (21093912³) is 9385802030469351126528
• The square root of 21093912 is 4592.8109040107
• The cube root of 21093912 is 276.3030697303

Scales and comparisons

• 21,093,912 seconds is equal to 34 weeks, 6 days, 3 hours, 25 minutes, 12 seconds.
• To count from 1 to 21,093,912 would take you about two days!

  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 21093912 cubic inches would be around 23 feet tall.

Recreational maths with 21093912

• 21093912 backwards is 21939012
• 21093912 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21093912's digits is 27
• More coming soon!