The function summary() in R is quite convenient as it gives at once the following values (in order of appearance):

my.dataset <- c(1,2,3,4,5,6,7,8,9,10)
summary(my.dataset)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##    1.00    3.25    5.50    5.50    7.75   10.00

Note that most of these values are actually used for drawing a boxplot.