It is a tau number, because it is divible by the number of its divisors (192).
It is a self number, because there is not a number n which added to its sum of digits gives 20514816.
It is an unprimeable number.
Almost surely, 220514816 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20514816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20514816 is an equidigital number, since it uses as much as digits as its factorization.
20514816 is an evil number, because the sum of its binary digits is even.
The square root of 20514816 is about 4529.3284270408. The cubic root of 20514816 is about 273.7511015156.
The spelling of 20514816 in words is "twenty million, five hundred fourteen thousand, eight hundred sixteen".