528000805 has 8 divisors (see below), whose sum is σ = 633921912. Its totient is φ = 422186688.

The previous prime is 528000799. The next prime is 528000821. The reversal of 528000805 is 508000825.

It can be written as a sum of positive squares in 4 ways, for example, as 187635204 + 340365601 = 13698^2 + 18449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 528000805 - 2²⁷ = 393783077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15454 + ... + 35983.

It is an arithmetic number, because the mean of its divisors is an integer number (79240239).

Almost surely, 2^528000805 is an apocalyptic number.

It is an amenable number.

528000805 is a deficient number, since it is larger than the sum of its proper divisors (105921107).

528000805 is a wasteful number, since it uses less digits than its factorization.

528000805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53495.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 528000805 is about 22978.2681027096. The cubic root of 528000805 is about 808.2484148816.

The spelling of 528000805 in words is "five hundred twenty-eight million, eight hundred five", and thus it is an aban number.