528688285 has 4 divisors (see below), whose sum is σ = 634425948. Its totient is φ = 422950624.

The previous prime is 528688283. The next prime is 528688331. The reversal of 528688285 is 582886825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242300356 + 286387929 = 15566^2 + 16923^2 .

It is a cyclic number.

It is not a de Polignac number, because 528688285 - 2¹ = 528688283 is a prime.

It is a super-2 number, since 2×528688285² = 559022605392482450, 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 (528688283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52868824 + ... + 52868833.

It is an arithmetic number, because the mean of its divisors is an integer number (158606487).

Almost surely, 2^528688285 is an apocalyptic number.

It is an amenable number.

528688285 is a deficient number, since it is larger than the sum of its proper divisors (105737663).

528688285 is a wasteful number, since it uses less digits than its factorization.

528688285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105737662.

The product of its digits is 2457600, while the sum is 52.

The square root of 528688285 is about 22993.2225884063. Note that the first 3 decimals coincide. The cubic root of 528688285 is about 808.5990542664.

The spelling of 528688285 in words is "five hundred twenty-eight million, six hundred eighty-eight thousand, two hundred eighty-five".