Adding to 11240520 its reverse (2504211), we get a palindrome (13744731).
It is a self number, because there is not a number n which added to its sum of digits gives 11240520.
Almost surely, 211240520 is an apocalyptic number.
11240520 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 11240520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17228160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11240520 is a wasteful number, since it uses less digits than its factorization.
11240520 is an odious number, because the sum of its binary digits is odd.
The square root of 11240520 is about 3352.6884734493. The cubic root of 11240520 is about 224.0072808008.
The spelling of 11240520 in words is "eleven million, two hundred forty thousand, five hundred twenty".