533440 has 28 divisors (see below), whose sum is σ = 1271016. Its totient is φ = 213248.

The previous prime is 533413. The next prime is 533447. The reversal of 533440 is 44335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514 + ... + 1153.

2⁵³³⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

533440 is an abundant number, since it is smaller than the sum of its proper divisors (737576).

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

533440 is a wasteful number, since it uses less digits than its factorization.

533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 533440 is about 730.3697693634. The cubic root of 533440 is about 81.1014326490.

Adding to 533440 its reverse (44335), we get a palindrome (577775).

The spelling of 533440 in words is "five hundred thirty-three thousand, four hundred forty".