Multipling 1404928 by its sum of digits (28), we get a square (39337984 = 62722).
1404928 divided by its sum of digits (28) gives a square (50176 = 2242).
Adding to 1404928 its reverse (8294041), we get a palindrome (9698969).
The cubic root of 1404928 is 112.
It is a congruent number.
It is an unprimeable number.
21404928 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 1404928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1404928 is an frugal number, since it uses more digits than its factorization.
1404928 is an evil number, because the sum of its binary digits is even.
The square root of 1404928 is about 1185.2965873569.
The spelling of 1404928 in words is "one million, four hundred four thousand, nine hundred twenty-eight".