528870 has 48 divisors (see below), whose sum is σ = 1370448. Its totient is φ = 130560.

The previous prime is 528863. The next prime is 528877. The reversal of 528870 is 78825.

528870 = T₁₀₀ + T₁₀₁ + ... + T₁₆₀.

It is an interprime number because it is at equal distance from previous prime (528863) and next prime (528877).

It is a super-3 number, since 3×528870³ = 443780333484309000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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 528870.

It is not an unprimeable number, because it can be changed into a prime (528877) by changing a digit.

528870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8640 + ... + 8700.

It is an arithmetic number, because the mean of its divisors is an integer number (28551).

2⁵²⁸⁸⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 528870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685224).

528870 is an abundant number, since it is smaller than the sum of its proper divisors (841578).

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

528870 is a wasteful number, since it uses less digits than its factorization.

528870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 528870 is about 727.2344876311. The cubic root of 528870 is about 80.8691684619.

The spelling of 528870 in words is "five hundred twenty-eight thousand, eight hundred seventy".