246 (number)

In mathematics

• an untouchable number.
• palindromic in bases 5, 9, 40, 81, 122 and 245.
• a Harshad number in bases 2, 3, 6, 7, 9, 11.
• the smallest number N for which it is known that there is an infinite number of prime gaps no larger than N.

• The aliquot sequence starting at 246 is: 246, 258, 270, 450, 759, 393, 135, 105, 87, 33, 15, 9, 4, 3, 1, 0.
• There are exactly 246 different rooted plane trees with eight nodes, and 246 different necklaces with seven black and seven white beads.

  In other fields

• +246 is the code for international direct dial phone calls to British Indian Ocean Territory.
• +1246, is the area code assigned to Barbados.
• List of highways numbered 246.
• 2-4-6, a Whyte notation classification of steam locomotive.