525000728 has 32 divisors (see below), whose sum is σ = 1133875200. Its totient is φ = 223225632.

The previous prime is 525000719. The next prime is 525000731. The reversal of 525000728 is 827000525.

It is a self number, because there is not a number n which added to its sum of digits gives 525000728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29798 + ... + 44021.

It is an arithmetic number, because the mean of its divisors is an integer number (35433600).

Almost surely, 2^525000728 is an apocalyptic number.

It is an amenable number.

525000728 is an abundant number, since it is smaller than the sum of its proper divisors (608874472).

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

525000728 is a wasteful number, since it uses less digits than its factorization.

525000728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73959 (or 73955 counting only the distinct ones).

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

The square root of 525000728 is about 22912.8943610361. The cubic root of 525000728 is about 806.7146958934.

The spelling of 525000728 in words is "five hundred twenty-five million, seven hundred twenty-eight", and thus it is an aban number.