528239 has 4 divisors (see below), whose sum is σ = 530424. Its totient is φ = 526056.

The previous prime is 528223. The next prime is 528247. The reversal of 528239 is 932825.

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

It is a cyclic number.

It is not a de Polignac number, because 528239 - 2⁴ = 528223 is a prime.

It is a super-2 number, since 2×528239² = 558072882242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁵ + 2³ + 2¹⁹ + 8 + 3⁶ + 9² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (132606).

2⁵²⁸²³⁹ is an apocalyptic number.

528239 is a deficient number, since it is larger than the sum of its proper divisors (2185).

528239 is a wasteful number, since it uses less digits than its factorization.

528239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 4320, while the sum is 29.

The square root of 528239 is about 726.8005228397. The cubic root of 528239 is about 80.8369937290.

It can be divided in two parts, 528 and 239, that added together give a palindrome (767).

The spelling of 528239 in words is "five hundred twenty-eight thousand, two hundred thirty-nine".