Il numero romano MMLXXVIII nel sistema decimale vale: 2078.
MMLXXVIII in latino si scrive duo milia septuaginta octo,
mentre in italiano duemilasettantotto.
MMLIX, MMLX, MMLXI, MMLXII, MMLXIII, MMLXIV, MMLXV, MMLXVI, MMLXVII, MMLXVIII, MMLXIX, MMLXX, MMLXXI, MMLXXII, MMLXXIII, MMLXXIV, MMLXXV, MMLXXVI, MMLXXVII, MMLXXIX, MMLXXX, MMLXXXI, MMLXXXII, MMLXXXIII, MMLXXXIV, MMLXXXV, MMLXXXVI, MMLXXXVII, MMLXXXVIII, MMLXXXIX, MMXC, MMXCI, MMXCII, MMXCIII, MMXCIV, MMXCV, MMXCVI, MMXCVII