16 (number) 0 to 15 in each column. Sixteen is an even number and a square number. Sixteen is the fourth power of two. Sixteen is the only integer that equals "m" and "n", for some unequal integers "m" and "n" ("m" = 4, "n" = 2, or vice versa). It has this property because 2 = 2 × 2. It is also equal to 2 (see tetration). 16 is the base of the hexadecimal number system, which is used extensively in computer science. In Spanish and Portuguese, 16 is the first compound number (Spanish: "dieciséis", European Portuguese: "dezasseis", Brazilian Portuguese: "dezesseis");
John (given name) still the 20th most common name for boys on the Social Security Administration's list of names given in 2006. In modern times John is the most common name in the United States, born as a first or middle name by 39.93 people per thousand; of these, 72.86% have it as the given name. When the statistics of the name are compared to the population statistics of America, the approximate number of people named John in the USA is 12,328,091 and the number of Johns in the USA is increasing by 104,925 each year. "John" was also among the most common