21396804

Names of 21396804

• Cardinal: 21396804 can be written as Twenty-one million, three hundred ninety-six thousand, eight hundred four.

Scientific notation

• Scientific notation: 2.1396804 × 10⁷

Factors of 21396804

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 403

Divisors of 21396804

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 11 12 13 22 26 33 37 39 44 52 66 74 78 111 132 143 148 156 222 286 337 407 429 444 481 572 674 814 858 962 1011 1221 1348 1443 1628 1716 1924 2022 2442 2886 3707 4044 4381 4884 5291 5772 7414 8762 10582 11121 12469 13143 14828 15873 17524 21164 22242 24938 26286 31746 37407 44484 48191 49876 52572 63492 74814 96382 137159 144573 149628 162097 192764 274318 289146 324194 411477 486291 548636 578292 648388 822954 972582 1645908 1783067 1945164 3566134 5349201 7132268 10698402 21396804
• Sum of all divisors σ(n): 60418176
• Sum of proper divisors (its aliquot sum) s(n): 39021372
• 21396804 is an abundant number, because the sum of its proper divisors (39021372) is greater than itself. Its abundance is 17624568

Bases of 21396804

• Binary: 1010001100111110101000100₂
• Hexadecimal: 0x1467D44
• Base-36: CQLVO

Squares and roots of 21396804

• 21396804 squared (21396804²) is 457823221414416
• 21396804 cubed (21396804³) is 9795953735252861926464
• The square root of 21396804 is 4625.6679517665
• The cube root of 21396804 is 277.6192880541

Scales and comparisons

• 21,396,804 seconds is equal to 35 weeks, 2 days, 15 hours, 33 minutes, 24 seconds.
• To count from 1 to 21,396,804 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 21396804 cubic inches would be around 23.1 feet tall.

Recreational maths with 21396804

• 21396804 backwards is 40869312
• 21396804 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21396804's digits is 33
• More coming soon!