It is a congruent number.
It is an unprimeable number.
Almost surely, 213785072 is an apocalyptic number.
13785072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13785072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20716308).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13785072 is a wasteful number, since it uses less digits than its factorization.
13785072 is an odious number, because the sum of its binary digits is odd.
The square root of 13785072 is about 3712.8253392800. The cubic root of 13785072 is about 239.7745104321.
The spelling of 13785072 in words is "thirteen million, seven hundred eighty-five thousand, seventy-two".