15978240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a zygodrome in base 2.
It is a congruent number.
It is an unprimeable number.
Almost surely, 215978240 is an apocalyptic number.
15978240 is a gapful number since it is divisible by the number (10) 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 15978240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29494920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15978240 is a wasteful number, since it uses less digits than its factorization.
15978240 is an evil number, because the sum of its binary digits is even.
The square root of 15978240 is about 3997.2790745706. The cubic root of 15978240 is about 251.8699253124.
The spelling of 15978240 in words is "fifteen million, nine hundred seventy-eight thousand, two hundred forty".