It is a congruent number.
21016016 is an apocalyptic number.
1016016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
1016016 is the 638-th centered pentagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1016016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1337712).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1016016 is a wasteful number, since it uses less digits than its factorization.
1016016 is an evil number, because the sum of its binary digits is even.
The square root of 1016016 is about 1007.9761901950. The cubic root of 1016016 is about 100.5310416227.
The spelling of 1016016 in words is "one million, sixteen thousand, sixteen".