It is a congruent number.
It is an unprimeable number.
Almost surely, 299728736 is an apocalyptic number.
99728736 is a gapful number since it is divisible by the number (96) formed by its first and last digit.
99728736 is the 5766-th octagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 99728736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144135936).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99728736 is a wasteful number, since it uses less digits than its factorization.
99728736 is an odious number, because the sum of its binary digits is odd.
The square root of 99728736 is about 9986.4275894836. The cubic root of 99728736 is about 463.7388046401.
The spelling of 99728736 in words is "ninety-nine million, seven hundred twenty-eight thousand, seven hundred thirty-six".