845128 has 16 divisors (see below), whose sum is σ = 1597500. Its totient is φ = 419136.

The previous prime is 845111. The next prime is 845129. The reversal of 845128 is 821548.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 142884 = 838^2 + 378^2 .

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 845096 and 845105.

It is not an unprimeable number, because it can be changed into a prime (845129) 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, 838 + ... + 1546.

2⁸⁴⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

845128 is a deficient number, since it is larger than the sum of its proper divisors (752372).

845128 is a wasteful number, since it uses less digits than its factorization.

845128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 860 counting only the distinct ones).

The product of its digits is 2560, while the sum is 28.

The square root of 845128 is about 919.3084357276. The cubic root of 845128 is about 94.5454928725.

The spelling of 845128 in words is "eight hundred forty-five thousand, one hundred twenty-eight".