Before mitosis, humans have 46 chromosomes and 46 chromatids. During interphase when DNA duplicates in preparation for mitosis, humans have chromosomes and chromatids. After mitosis has concluded, humans again have 46 chromosomes and 46 chromatids.
During interphase, when DNA duplicates in preparation for mitosis, humans have 46 chromosomes and 92 chromatids. This is because each chromosome replicates and forms two identical sister chromatids that are held together by a centromere.
After mitosis has concluded, humans again have 46 chromosomes and 46 chromatids. During mitosis, the sister chromatids separate and migrate to opposite poles of the cell, resulting in the formation of two daughter cells, each with the same number of chromosomes as the parent cell. Therefore, each daughter cell will have 46 chromosomes and 46 chromatids.