Il numero romano MMDLXXVIII nel sistema decimale vale: 2578.
MMDLXXVIII in latino si scrive duo milia quingenti septuaginta octo,
mentre in italiano duemilacinquecentosettantotto.
MMDLIX, MMDLX, MMDLXI, MMDLXII, MMDLXIII, MMDLXIV, MMDLXV, MMDLXVI, MMDLXVII, MMDLXVIII, MMDLXIX, MMDLXX, MMDLXXI, MMDLXXII, MMDLXXIII, MMDLXXIV, MMDLXXV, MMDLXXVI, MMDLXXVII, MMDLXXIX, MMDLXXX, MMDLXXXI, MMDLXXXII, MMDLXXXIII, MMDLXXXIV, MMDLXXXV, MMDLXXXVI, MMDLXXXVII, MMDLXXXVIII, MMDLXXXIX, MMDXC, MMDXCI, MMDXCII, MMDXCIII, MMDXCIV, MMDXCV, MMDXCVI, MMDXCVII