Adding to 30456 its reverse (65403), we get a palindrome (95859).
It is a happy number.
It is an Ulam number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30456.
It is an unprimeable number.
30456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
230456 is an apocalyptic number.
30456 is a gapful number since it is divisible by the number (36) 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 30456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30456 is a wasteful number, since it uses less digits than its factorization.
30456 is an evil number, because the sum of its binary digits is even.
The square root of 30456 is about 174.5164748670. The cubic root of 30456 is about 31.2289671804.
The spelling of 30456 in words is "thirty thousand, four hundred fifty-six".