528808085 has 32 divisors (see below), whose sum is σ = 699142752. Its totient is φ = 381588480.

The previous prime is 528808043. The next prime is 528808087. The reversal of 528808085 is 580808825.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 41899729 + 486908356 = 6473^2 + 22066^2 .

It is a de Polignac number, because none of the positive numbers 2^k-528808085 is a prime.

It is a super-2 number, since 2×528808085² = 559275981522734450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528808087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 780767 + ... + 781443.

It is an arithmetic number, because the mean of its divisors is an integer number (21848211).

Almost surely, 2^528808085 is an apocalyptic number.

It is an amenable number.

528808085 is a deficient number, since it is larger than the sum of its proper divisors (170334667).

528808085 is a wasteful number, since it uses less digits than its factorization.

528808085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its (nonzero) digits is 204800, while the sum is 44.

The square root of 528808085 is about 22995.8275563199. The cubic root of 528808085 is about 808.6601254455.

The spelling of 528808085 in words is "five hundred twenty-eight million, eight hundred eight thousand, eighty-five".