5720 is nontrivially palindromic in base 3.
It is a plaindrome in base 12.
It is a nialpdrome in base 9 and base 11.
It is a zygodrome in base 9 and base 12.
It is a congruent number.
It is an unprimeable number.
25720 is an apocalyptic number.
5720 is the 44-th octagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 5720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
5720 is a wasteful number, since it uses less digits than its factorization.
5720 is an evil number, because the sum of its binary digits is even.
The square root of 5720 is about 75.6306816048. The cubic root of 5720 is about 17.8840280735.
Adding to 5720 its reverse (275), we get a palindrome (5995).
Subtracting from 5720 its reverse (275), we obtain a palindrome (5445).
The spelling of 5720 in words is "five thousand, seven hundred twenty".