858028 has 6 divisors (see below), whose sum is σ = 1501556. Its totient is φ = 429012.

The previous prime is 858001. The next prime is 858029. The reversal of 858028 is 820858.

It is not an unprimeable number, because it can be changed into a prime (858029) by changing a digit.

858028 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107250 + ... + 107257.

2⁸⁵⁸⁰²⁸ is an apocalyptic number.

It is an amenable number.

858028 is a deficient number, since it is larger than the sum of its proper divisors (643528).

858028 is a wasteful number, since it uses less digits than its factorization.

858028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214511 (or 214509 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 858028 is about 926.2980082025. The cubic root of 858028 is about 95.0241120698.

The spelling of 858028 in words is "eight hundred fifty-eight thousand, twenty-eight".