How many sweat glands does an adult have?

An adult human typically has between 2 to 4 million sweat glands distributed throughout the body. These glands are primarily located in areas such as the palms, soles, forehead, and armpits. There are two main types of sweat glands: eccrine, which are found all over the body and help regulate temperature, and apocrine, which are concentrated in specific areas and are associated with body odor.