21086464

Names of 21086464

• Cardinal: 21086464 can be written as Twenty-one million, eighty-six thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1086464 × 10⁷

Factors of 21086464

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 50

Divisors of 21086464

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 41 49 56 64 82 98 112 128 164 196 224 256 287 328 392 448 574 656 784 896 1148 1312 1568 1681 1792 2009 2296 2624 3136 3362 4018 4592 5248 6272 6724 8036 9184 10496 11767 12544 13448 16072 18368 23534 26896 32144 36736 47068 53792 64288 73472 82369 94136 107584 128576 164738 188272 215168 257152 329476 376544 430336 514304 658952 753088 1317904 1506176 2635808 3012352 5271616 10543232 21086464
• Sum of all divisors σ(n): 50185821
• Sum of proper divisors (its aliquot sum) s(n): 29099357
• 21086464 is an abundant number, because the sum of its proper divisors (29099357) is greater than itself. Its abundance is 8012893

Bases of 21086464

• Binary: 1010000011100000100000000₂
• Hexadecimal: 0x141C100
• Base-36: CJYF4

Squares and roots of 21086464

• 21086464 squared (21086464²) is 444638964023296
• 21086464 cubed (21086464³) is 9375863507874526265344
• 21086464 is a perfect square number. Its square root is 4592
• The cube root of 21086464 is 276.2705461675

Scales and comparisons

• 21,086,464 seconds is equal to 34 weeks, 6 days, 1 hour, 21 minutes, 4 seconds.
• To count from 1 to 21,086,464 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 21086464 cubic inches would be around 23 feet tall.

Recreational maths with 21086464

• 21086464 backwards is 46468012
• The number of decimal digits it has is: 8
• The sum of 21086464's digits is 31
• More coming soon!