828208865 has 16 divisors (see below), whose sum is σ = 1119177216. Its totient is φ = 582902400.

The previous prime is 828208847. The next prime is 828208867. The reversal of 828208865 is 568802828.

It is not a de Polignac number, because 828208865 - 2²² = 824014561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828208867) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 241172 + ... + 244581.

It is an arithmetic number, because the mean of its divisors is an integer number (69948576).

Almost surely, 2^828208865 is an apocalyptic number.

It is an amenable number.

828208865 is a deficient number, since it is larger than the sum of its proper divisors (290968351).

828208865 is a wasteful number, since it uses less digits than its factorization.

828208865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485800.

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 828208865 is about 28778.6181912892. The cubic root of 828208865 is about 939.1031377021.

The spelling of 828208865 in words is "eight hundred twenty-eight million, two hundred eight thousand, eight hundred sixty-five".