845828 has 6 divisors (see below), whose sum is σ = 1480206. Its totient is φ = 422912.

The previous prime is 845809. The next prime is 845833. The reversal of 845828 is 828548.

It can be written as a sum of positive squares in only one way, i.e., 529984 + 315844 = 728^2 + 562^2 .

It is an unprimeable number.

845828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105725 + ... + 105732.

It is an arithmetic number, because the mean of its divisors is an integer number (246701).

2⁸⁴⁵⁸²⁸ is an apocalyptic number.

It is an amenable number.

845828 is a deficient number, since it is larger than the sum of its proper divisors (634378).

845828 is a wasteful number, since it uses less digits than its factorization.

845828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211461 (or 211459 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 845828 is about 919.6890778954. The cubic root of 845828 is about 94.5715889515.

The spelling of 845828 in words is "eight hundred forty-five thousand, eight hundred twenty-eight".