866028 has 12 divisors (see below), whose sum is σ = 2020760. Its totient is φ = 288672.

The previous prime is 866011. The next prime is 866029. The reversal of 866028 is 820668.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 865986 and 866004.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866028.

It is not an unprimeable number, because it can be changed into a prime (866029) 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, 36073 + ... + 36096.

2⁸⁶⁶⁰²⁸ is an apocalyptic number.

It is an amenable number.

866028 is an abundant number, since it is smaller than the sum of its proper divisors (1154732).

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

866028 is a wasteful number, since it uses less digits than its factorization.

866028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72176 (or 72174 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 866028 is about 930.6062540086. The cubic root of 866028 is about 95.3185245498.

The spelling of 866028 in words is "eight hundred sixty-six thousand, twenty-eight".