528307 has 4 divisors (see below), whose sum is σ = 568960. Its totient is φ = 487656.

The previous prime is 528299. The next prime is 528313. The reversal of 528307 is 703825.

528307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 528307 - 2³ = 528299 is a prime.

It is a Duffinian number.

528307 is a lucky number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (528317) 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, 20307 + ... + 20332.

It is an arithmetic number, because the mean of its divisors is an integer number (142240).

2⁵²⁸³⁰⁷ is an apocalyptic number.

528307 is a deficient number, since it is larger than the sum of its proper divisors (40653).

528307 is a wasteful number, since it uses less digits than its factorization.

528307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40652.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 528307 is about 726.8473017079. The cubic root of 528307 is about 80.8404622850.

The spelling of 528307 in words is "five hundred twenty-eight thousand, three hundred seven".