Il numero romano MMMDCLXXVIII nel sistema decimale vale: 3678.
MMMDCLXXVIII in latino si scrive tria milia sescenti septuaginta octo,
mentre in italiano tremilaseicentosettantotto.
MMMDCLIX, MMMDCLX, MMMDCLXI, MMMDCLXII, MMMDCLXIII, MMMDCLXIV, MMMDCLXV, MMMDCLXVI, MMMDCLXVII, MMMDCLXVIII, MMMDCLXIX, MMMDCLXX, MMMDCLXXI, MMMDCLXXII, MMMDCLXXIII, MMMDCLXXIV, MMMDCLXXV, MMMDCLXXVI, MMMDCLXXVII, MMMDCLXXIX, MMMDCLXXX, MMMDCLXXXI, MMMDCLXXXII, MMMDCLXXXIII, MMMDCLXXXIV, MMMDCLXXXV, MMMDCLXXXVI, MMMDCLXXXVII, MMMDCLXXXVIII, MMMDCLXXXIX, MMMDCXC, MMMDCXCI, MMMDCXCII, MMMDCXCIII, MMMDCXCIV, MMMDCXCV, MMMDCXCVI, MMMDCXCVII