21346668

Names of 21346668

• Cardinal: 21346668 can be written as Twenty-one million, three hundred forty-six thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1346668 × 10⁷

Factors of 21346668

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 191

Divisors of 21346668

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 23 28 29 36 42 46 58 63 69 84 87 92 116 126 127 138 161 174 203 207 252 254 261 276 322 348 381 406 414 483 508 522 609 644 667 762 812 828 889 966 1044 1143 1218 1334 1449 1524 1778 1827 1932 2001 2286 2436 2667 2668 2898 2921 3556 3654 3683 4002 4572 4669 5334 5796 5842 6003 7308 7366 8001 8004 8763 9338 10668 11049 11684 12006 14007 14732 16002 17526 18676 20447 22098 24012 25781 26289 28014 32004 33147 35052 40894 42021 44196 51562 52578 56028 61341 66294 77343 81788 84042 84709 103124 105156 122682 132588 154686 168084 169418 184023 232029 245364 254127 309372 338836 368046 464058 508254 592963 736092 762381 928116 1016508 1185926 1524762 1778889 2371852 3049524 3557778 5336667 7115556 10673334 21346668
• Sum of all divisors σ(n): 67092480
• Sum of proper divisors (its aliquot sum) s(n): 45745812
• 21346668 is an abundant number, because the sum of its proper divisors (45745812) is greater than itself. Its abundance is 24399144

Bases of 21346668

• Binary: 1010001011011100101101100₂
• Hexadecimal: 0x145B96C
• Base-36: CPJ70

Squares and roots of 21346668

• 21346668 squared (21346668²) is 455680234702224
• 21346668 cubed (21346668³) is 9727254684350454589632
• The square root of 21346668 is 4620.2454480255
• The cube root of 21346668 is 277.4022835889

Scales and comparisons

• 21,346,668 seconds is equal to 35 weeks, 2 days, 1 hour, 37 minutes, 48 seconds.
• To count from 1 to 21,346,668 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 21346668 cubic inches would be around 23.1 feet tall.

Recreational maths with 21346668

• 21346668 backwards is 86664312
• 21346668 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21346668's digits is 36
• More coming soon!