865842828 has 24 divisors (see below), whose sum is σ = 2020964400. Its totient is φ = 288519360.

The previous prime is 865842811. The next prime is 865842829. The reversal of 865842828 is 828248568.

It is not an unprimeable number, because it can be changed into a prime (865842829) 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 7 ways as a sum of consecutive naturals, for example, 32898 + ... + 53046.

It is an arithmetic number, because the mean of its divisors is an integer number (84206850).

Almost surely, 2^865842828 is an apocalyptic number.

It is an amenable number.

865842828 is an abundant number, since it is smaller than the sum of its proper divisors (1155121572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865842828 is a wasteful number, since it uses less digits than its factorization.

865842828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23737 (or 23735 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 51.

The square root of 865842828 is about 29425.2073569584. The cubic root of 865842828 is about 953.1173047384.

The spelling of 865842828 in words is "eight hundred sixty-five million, eight hundred forty-two thousand, eight hundred twenty-eight".