Il numero romano MMMMDCLXXVIII nel sistema decimale vale: 4678.
MMMMDCLXXVIII in latino si scrive quattuor milia sescenti septuaginta octo,
mentre in italiano quattromilaseicentosettantotto.
MMMMDCLIX, MMMMDCLX, MMMMDCLXI, MMMMDCLXII, MMMMDCLXIII, MMMMDCLXIV, MMMMDCLXV, MMMMDCLXVI, MMMMDCLXVII, MMMMDCLXVIII, MMMMDCLXIX, MMMMDCLXX, MMMMDCLXXI, MMMMDCLXXII, MMMMDCLXXIII, MMMMDCLXXIV, MMMMDCLXXV, MMMMDCLXXVI, MMMMDCLXXVII, MMMMDCLXXIX, MMMMDCLXXX, MMMMDCLXXXI, MMMMDCLXXXII, MMMMDCLXXXIII, MMMMDCLXXXIV, MMMMDCLXXXV, MMMMDCLXXXVI, MMMMDCLXXXVII, MMMMDCLXXXVIII, MMMMDCLXXXIX, MMMMDCXC, MMMMDCXCI, MMMMDCXCII, MMMMDCXCIII, MMMMDCXCIV, MMMMDCXCV, MMMMDCXCVI, MMMMDCXCVII