Normal sperm count is:
Some important points regarding spermatogenesis

Sperms are produced in: seminiferous tubules in testes
Sertoli cells nurture the developing sperms
Time for spermatogenesis: 64 days (Thymidine labelling records say it is 74 days)
Normal sperm count: 20 million per ml or 40 million per ejaculate
Infertility is considered with a sperm count of less than 15 million sperms/ml
Fructose is the main source of energy for sperms
Prostaglandins suppress immune response against sperms in the female reproductive tract
Zinc serves to help to stabilize the DNA-containing chromatin in the sperm cells
Acrosomal cap houses the various enzymes needed to penetrate the zona pellucida of the oocyte.
20 million per ml
40 million per ejaculate
Both
None