The square root of 921600 is 960.
It is a Jordan-Polya number, since it can be written as (5!)2 ⋅ (2!)6.
It is a Duffinian number.
It is a nialpdrome in base 16.
921600 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
921600 is a Friedman number, since it can be written as 960^(2*(1+0)), using all its digits and the basic arithmetic operations.
2921600 is an apocalyptic number.
921600 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
921600 is the 960-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 921600
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
921600 is a wasteful number, since it uses less digits than its factorization.
921600 is an evil number, because the sum of its binary digits is even.
The cubic root of 921600 is about 97.3152319292.
Adding to 921600 its reverse (6129), we get a palindrome (927729).
The spelling of 921600 in words is "nine hundred twenty-one thousand, six hundred".