Adding to 30240 its reverse (4203), we get a palindrome (34443).
It is a Jordan-Polya number, since it can be written as 7! ⋅ 3!.
It is a tau number, because it is divible by the number of its divisors (96).
It is a harmonic number, since the harmonic mean of its divisors is an integer.
30240 is an admirable number.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 16.
It is a congruent number.
30240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
230240 is an apocalyptic number.
30240 is a gapful number since it is divisible by the number (30) 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 30240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30240 is a wasteful number, since it uses less digits than its factorization.
30240 is an evil number, because the sum of its binary digits is even.
The square root of 30240 is about 173.8965209543. The cubic root of 30240 is about 31.1549646111.
The spelling of 30240 in words is "thirty thousand, two hundred forty".