13825728 is a `hidden beast` number, since 1 + 3 + 82 + 572 + 8 = 666.
13825728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (168).
It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 13825728 = 123 + 2403 = 883 + 2363.
It is an unprimeable number.
Almost surely, 213825728 is an apocalyptic number.
13825728 is a gapful number since it is divisible by the number (18) 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 13825728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23668736).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13825728 is an equidigital number, since it uses as much as digits as its factorization.
13825728 is an evil number, because the sum of its binary digits is even.
The square root of 13825728 is about 3718.2963840985. The cubic root of 13825728 is about 240.0099995834.
The spelling of 13825728 in words is "thirteen million, eight hundred twenty-five thousand, seven hundred twenty-eight".