556828 has 12 divisors (see below), whose sum is σ = 984312. Its totient is φ = 275600.

The previous prime is 556823. The next prime is 556841. The reversal of 556828 is 828655.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 556793 and 556802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556823) by changing a digit.

556828 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 in 3 ways as a sum of consecutive naturals, for example, 223 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (82026).

2⁵⁵⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

556828 is a deficient number, since it is larger than the sum of its proper divisors (427484).

556828 is a wasteful number, since it uses less digits than its factorization.

556828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1410 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 556828 is about 746.2090859806. The cubic root of 556828 is about 82.2697836453.

The spelling of 556828 in words is "five hundred fifty-six thousand, eight hundred twenty-eight".