21349944

Names of 21349944

• Cardinal: 21349944 can be written as Twenty-one million, three hundred forty-nine thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 2.1349944 × 10⁷

Factors of 21349944

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3874

Divisors of 21349944

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 28 33 36 42 44 56 63 66 72 77 84 88 99 126 132 154 168 198 231 252 264 308 396 462 504 616 693 792 924 1386 1848 2772 3851 5544 7702 11553 15404 23106 26957 30808 34659 42361 46212 53914 69318 80871 84722 92424 107828 127083 138636 161742 169444 215656 242613 254166 277272 296527 323484 338888 381249 485226 508332 593054 646968 762498 889581 970452 1016664 1186108 1524996 1779162 1940904 2372216 2668743 3049992 3558324 5337486 7116648 10674972 21349944
• Sum of all divisors σ(n): 72109440
• Sum of proper divisors (its aliquot sum) s(n): 50759496
• 21349944 is an abundant number, because the sum of its proper divisors (50759496) is greater than itself. Its abundance is 29409552

Bases of 21349944

• Binary: 1010001011100011000111000₂
• Hexadecimal: 0x145C638
• Base-36: CPLQ0

Squares and roots of 21349944

• 21349944 squared (21349944²) is 455820108803136
• 21349944 cubed (21349944³) is 9731733797020860624384
• The square root of 21349944 is 4620.5999610441
• The cube root of 21349944 is 277.4164735221

Scales and comparisons

• 21,349,944 seconds is equal to 35 weeks, 2 days, 2 hours, 32 minutes, 24 seconds.
• To count from 1 to 21,349,944 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 21349944 cubic inches would be around 23.1 feet tall.

Recreational maths with 21349944

• 21349944 backwards is 44994312
• 21349944 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21349944's digits is 36
• More coming soon!