528989 has 12 divisors (see below), whose sum is σ = 595764. Its totient is φ = 467712.

The previous prime is 528973. The next prime is 528991. The reversal of 528989 is 989825.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 80089 + 448900 = 283^2 + 670^2 .

It is not a de Polignac number, because 528989 - 2⁴ = 528973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14279 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (49647).

2⁵²⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

528989 is a deficient number, since it is larger than the sum of its proper divisors (66775).

528989 is a wasteful number, since it uses less digits than its factorization.

528989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 83 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 528989 is about 727.3162998311. The cubic root of 528989 is about 80.8752334113.

The spelling of 528989 in words is "five hundred twenty-eight thousand, nine hundred eighty-nine".