247 (number)

247 (two hundred [and] forty-seven) is the natural number following 246 and preceding 248.

Additionally, 247 is:
 * a semiprime.
 * a brilliant number (the product of two primes with the same number of digits).
 * a pentagonal number.
 * palindromic in base 18 (DD18).
 * a Harshad number in bases 10, 14, 19, 20, 27, 39, 40, 58, 77, 79, 115, 118, 229 and 235.
 * the smallest number which can be expressed as the difference between two integers that contain together all the decimal digits 0–9. i.e. 247 = 50123 - 49876.