525728 has 24 divisors (see below), whose sum is σ = 1183392. Its totient is φ = 225216.

The previous prime is 525727. The next prime is 525731. The reversal of 525728 is 827525.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 525728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (49308).

2⁵²⁵⁷²⁸ is an apocalyptic number.

It is an amenable number.

525728 is an abundant number, since it is smaller than the sum of its proper divisors (657664).

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

525728 is a wasteful number, since it uses less digits than its factorization.

525728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364 (or 2356 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 525728 is about 725.0710310032. The cubic root of 525728 is about 80.7087032078.

The spelling of 525728 in words is "five hundred twenty-five thousand, seven hundred twenty-eight".