870028 has 12 divisors (see below), whose sum is σ = 1531600. Its totient is φ = 432432.

The previous prime is 870013. The next prime is 870031. The reversal of 870028 is 820078.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 869984 and 870011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250 + ... + 1342.

2⁸⁷⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

870028 is a deficient number, since it is larger than the sum of its proper divisors (661572).

870028 is a wasteful number, since it uses less digits than its factorization.

870028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 870028 is about 932.7529147636. The cubic root of 870028 is about 95.4650512178.

The spelling of 870028 in words is "eight hundred seventy thousand, twenty-eight".