556128 has 36 divisors (see below), whose sum is σ = 1582308. Its totient is φ = 185280.

The previous prime is 556123. The next prime is 556159. The reversal of 556128 is 821655.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556123) by changing a digit.

556128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (43953).

2⁵⁵⁶¹²⁸ is an apocalyptic number.

It is an amenable number.

556128 is an abundant number, since it is smaller than the sum of its proper divisors (1026180).

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

556128 is a wasteful number, since it uses less digits than its factorization.

556128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947 (or 1936 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 556128 is about 745.7399010379. The cubic root of 556128 is about 82.2352948400.

The spelling of 556128 in words is "five hundred fifty-six thousand, one hundred twenty-eight".