528440 has 32 divisors (see below), whose sum is σ = 1298160. Its totient is φ = 192000.

The previous prime is 528433. The next prime is 528469. The reversal of 528440 is 44825.

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 528440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161 + ... + 1040.

2⁵²⁸⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

528440 is an abundant number, since it is smaller than the sum of its proper divisors (769720).

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

528440 is a wasteful number, since it uses less digits than its factorization.

528440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 528440 is about 726.9387869690. The cubic root of 528440 is about 80.8472455123.

The spelling of 528440 in words is "five hundred twenty-eight thousand, four hundred forty".