It is a congruent number.
2136728 is an apocalyptic number.
136728 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 136728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192390).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
136728 is a wasteful number, since it uses less digits than its factorization.
136728 is an evil number, because the sum of its binary digits is even.
The square root of 136728 is about 369.7674945151. The cubic root of 136728 is about 51.5172280314.
The spelling of 136728 in words is "one hundred thirty-six thousand, seven hundred twenty-eight".