Il numero romano MMDCCCLXXVIII nel sistema decimale vale: 2878.
MMDCCCLXXVIII in latino si scrive duo milia octingenti septuaginta octo,
mentre in italiano duemilaottocentosettantotto.
MMDCCCLIX, MMDCCCLX, MMDCCCLXI, MMDCCCLXII, MMDCCCLXIII, MMDCCCLXIV, MMDCCCLXV, MMDCCCLXVI, MMDCCCLXVII, MMDCCCLXVIII, MMDCCCLXIX, MMDCCCLXX, MMDCCCLXXI, MMDCCCLXXII, MMDCCCLXXIII, MMDCCCLXXIV, MMDCCCLXXV, MMDCCCLXXVI, MMDCCCLXXVII, MMDCCCLXXIX, MMDCCCLXXX, MMDCCCLXXXI, MMDCCCLXXXII, MMDCCCLXXXIII, MMDCCCLXXXIV, MMDCCCLXXXV, MMDCCCLXXXVI, MMDCCCLXXXVII, MMDCCCLXXXVIII, MMDCCCLXXXIX, MMDCCCXC, MMDCCCXCI, MMDCCCXCII, MMDCCCXCIII, MMDCCCXCIV, MMDCCCXCV, MMDCCCXCVI, MMDCCCXCVII