21368886

Names of 21368886

• Cardinal: 21368886 can be written as Twenty-one million, three hundred sixty-eight thousand, eight hundred eighty-six.

Scientific notation

• Scientific notation: 2.1368886 × 10⁷

Factors of 21368886

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2057

Divisors of 21368886

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 11 14 21 22 23 33 42 46 66 69 77 138 154 161 231 253 322 462 483 506 759 966 1518 1771 2011 3542 4022 5313 6033 10626 12066 14077 22121 28154 42231 44242 46253 66363 84462 92506 132726 138759 154847 277518 309694 323771 464541 508783 647542 929082 971313 1017566 1526349 1942626 3052698 3561481 7122962 10684443 21368886
• Sum of all divisors σ(n): 55627776
• Sum of proper divisors (its aliquot sum) s(n): 34258890
• 21368886 is an abundant number, because the sum of its proper divisors (34258890) is greater than itself. Its abundance is 12890004

Bases of 21368886

• Binary: 1010001100001000000110110₂
• Hexadecimal: 0x1461036
• Base-36: CQ0C6

Squares and roots of 21368886

• 21368886 squared (21368886²) is 456629288880996
• 21368886 cubed (21368886³) is 9757659218359071090456
• The square root of 21368886 is 4622.6492404247
• The cube root of 21368886 is 277.4984919973

Scales and comparisons

• 21,368,886 seconds is equal to 35 weeks, 2 days, 7 hours, 48 minutes, 6 seconds.
• To count from 1 to 21,368,886 would take you about six 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 21368886 cubic inches would be around 23.1 feet tall.

Recreational maths with 21368886

• 21368886 backwards is 68886312
• 21368886 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21368886's digits is 42
• More coming soon!