Kanji Learners Dictionary (Jack Halpern, 2 edition, 2013):
408
Kodansha Kanji Dictionary (Jack Halpern, 2013):
542
Morohashi Daikanwajiten (Volume 7, page 0701):
20428
New Japanese-English Character Dictionary (Jack Halpern, 1990):
452
The New Nelson Japanese-English Character Dictionary (John Haig):
3575