Il numero romano MMMDCCCLXXVIII nel sistema decimale vale: 3878.
MMMDCCCLXXVIII in latino si scrive tria milia octingenti septuaginta octo,
mentre in italiano tremilaottocentosettantotto.
MMMDCCCLIX, MMMDCCCLX, MMMDCCCLXI, MMMDCCCLXII, MMMDCCCLXIII, MMMDCCCLXIV, MMMDCCCLXV, MMMDCCCLXVI, MMMDCCCLXVII, MMMDCCCLXVIII, MMMDCCCLXIX, MMMDCCCLXX, MMMDCCCLXXI, MMMDCCCLXXII, MMMDCCCLXXIII, MMMDCCCLXXIV, MMMDCCCLXXV, MMMDCCCLXXVI, MMMDCCCLXXVII, MMMDCCCLXXIX, MMMDCCCLXXX, MMMDCCCLXXXI, MMMDCCCLXXXII, MMMDCCCLXXXIII, MMMDCCCLXXXIV, MMMDCCCLXXXV, MMMDCCCLXXXVI, MMMDCCCLXXXVII, MMMDCCCLXXXVIII, MMMDCCCLXXXIX, MMMDCCCXC, MMMDCCCXCI, MMMDCCCXCII, MMMDCCCXCIII, MMMDCCCXCIV, MMMDCCCXCV, MMMDCCCXCVI, MMMDCCCXCVII