491536 is an admirable number.
It is a congruent number.
2491536 is an apocalyptic number.
491536 is the 331-st centered nonagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 491536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492032).
491536 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
491536 is a wasteful number, since it uses less digits than its factorization.
491536 is an odious number, because the sum of its binary digits is odd.
The square root of 491536 is about 701.0962844004. The cubic root of 491536 is about 78.9196426929.
The spelling of 491536 in words is "four hundred ninety-one thousand, five hundred thirty-six".