528780 has 48 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 120768.

The previous prime is 528779. The next prime is 528791. The reversal of 528780 is 87825.

Added to its reverse (87825) it gives a triangular number (616605 = T₁₁₁₀).

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

It is a d-powerful number, because it can be written as 5⁵ + 2¹⁹ + 7³ + 8³ + 8³ + 0 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2⁵²⁸⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 528780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846720).

528780 is an abundant number, since it is smaller than the sum of its proper divisors (1164660).

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

528780 is a wasteful number, since it uses less digits than its factorization.

528780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

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

The square root of 528780 is about 727.1726067448. The cubic root of 528780 is about 80.8645809211.

Adding to 528780 its reverse (87825), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 528780 in words is "five hundred twenty-eight thousand, seven hundred eighty".