864028 has 24 divisors (see below), whose sum is σ = 1678320. Its totient is φ = 385920.

The previous prime is 864013. The next prime is 864029. The reversal of 864028 is 820468.

It is a junction number, because it is equal to n+sod(n) for n = 863987 and 864005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3078 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (69930).

2⁸⁶⁴⁰²⁸ is an apocalyptic number.

It is an amenable number.

864028 is a deficient number, since it is larger than the sum of its proper divisors (814292).

864028 is a wasteful number, since it uses less digits than its factorization.

864028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 864028 is about 929.5310645697. The cubic root of 864028 is about 95.2450919780.

It can be divided in two parts, 8640 and 28, that added together give a palindrome (8668).

The spelling of 864028 in words is "eight hundred sixty-four thousand, twenty-eight".