557359728 has 80 divisors (see below), whose sum is σ = 1461989760. Its totient is φ = 182953728.

The previous prime is 557359721. The next prime is 557359771. The reversal of 557359728 is 827953755.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557359721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1606051 + ... + 1606397.

It is an arithmetic number, because the mean of its divisors is an integer number (18274872).

Almost surely, 2^557359728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557359728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730994880).

557359728 is an abundant number, since it is smaller than the sum of its proper divisors (904630032).

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

557359728 is a wasteful number, since it uses less digits than its factorization.

557359728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 768 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 51.

The square root of 557359728 is about 23608.4672945958. The cubic root of 557359728 is about 822.9596242373.

The spelling of 557359728 in words is "five hundred fifty-seven million, three hundred fifty-nine thousand, seven hundred twenty-eight".