It is a happy number.
12988823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
Almost surely, 212988823 is an apocalyptic number.
12988823 is an equidigital number, since it uses as much as digits as its factorization.
12988823 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20544.
The square root of 12988823 is about 3604.0009711430. Note that the first 3 decimals coincide. The cubic root of 12988823 is about 235.0660626099.
The spelling of 12988823 in words is "twelve million, nine hundred eighty-eight thousand, eight hundred twenty-three".