“what / how many” in Japanese is 何, read ka, nani, nan (か, なに, なん). It is a Grade 2 Kyōiku kanji, taught in year 2 of Japanese elementary school, and appears in words such as 何時 (what time).
What does 何 mean?
これは何ですか。
Same sound, different character — the classic trap. Compare them side by side: