556728580 has 24 divisors (see below), whose sum is σ = 1237903128. Its totient is φ = 209591808.

The previous prime is 556728577. The next prime is 556728607. The reversal of 556728580 is 85827655.

It can be written as a sum of positive squares in 4 ways, for example, as 24780484 + 531948096 = 4978^2 + 23064^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 556728580.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818379 + ... + 819058.

It is an arithmetic number, because the mean of its divisors is an integer number (51579297).

Almost surely, 2^556728580 is an apocalyptic number.

It is an amenable number.

556728580 is an abundant number, since it is smaller than the sum of its proper divisors (681174548).

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

556728580 is a wasteful number, since it uses less digits than its factorization.

556728580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637463 (or 1637461 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 556728580 is about 23595.0965244900. The cubic root of 556728580 is about 822.6488701133.

The spelling of 556728580 in words is "five hundred fifty-six million, seven hundred twenty-eight thousand, five hundred eighty".