528720 has 40 divisors (see below), whose sum is σ = 1639776. Its totient is φ = 140928.

The previous prime is 528719. The next prime is 528763. The reversal of 528720 is 27825.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 862 + ... + 1341.

2⁵²⁸⁷²⁰ is an apocalyptic number.

It is an amenable number.

528720 is an abundant number, since it is smaller than the sum of its proper divisors (1111056).

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

528720 is a wasteful number, since it uses less digits than its factorization.

528720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 528720 is about 727.1313498949. The cubic root of 528720 is about 80.8615222714.

The spelling of 528720 in words is "five hundred twenty-eight thousand, seven hundred twenty".