656028 has 18 divisors (see below), whose sum is σ = 1658384. Its totient is φ = 218664.

The previous prime is 656023. The next prime is 656039. The reversal of 656028 is 820656.

656028 is a `hidden beast` number, since 656 + 0 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 655992 and 656010.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656028.

It is not an unprimeable number, because it can be changed into a prime (656023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9076 + ... + 9147.

2⁶⁵⁶⁰²⁸ is an apocalyptic number.

It is an amenable number.

656028 is an abundant number, since it is smaller than the sum of its proper divisors (1002356).

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

656028 is a wasteful number, since it uses less digits than its factorization.

656028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18233 (or 18228 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 656028 is about 809.9555543362. The cubic root of 656028 is about 86.8908659324.

The spelling of 656028 in words is "six hundred fifty-six thousand, twenty-eight".