532440 has 128 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 129024.

The previous prime is 532439. The next prime is 532447. The reversal of 532440 is 44235.

It is a happy number.

532440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18346 + ... + 18374.

2⁵³²⁴⁴⁰ 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 532440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972000).

532440 is an abundant number, since it is smaller than the sum of its proper divisors (1411560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

532440 is a wasteful number, since it uses less digits than its factorization.

532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 532440 is about 729.6848634856. The cubic root of 532440 is about 81.0507226887.

Adding to 532440 its reverse (44235), we get a palindrome (576675).

The spelling of 532440 in words is "five hundred thirty-two thousand, four hundred forty".