556744286728 has 64 divisors (see below), whose sum is σ = 1249854520320. Its totient is φ = 227321160000.

The previous prime is 556744286653. The next prime is 556744286729. The reversal of 556744286728 is 827682447655.

It is a self number, because there is not a number n which added to its sum of digits gives 556744286728.

It is not an unprimeable number, because it can be changed into a prime (556744286729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537778 + ... + 1184353.

It is an arithmetic number, because the mean of its divisors is an integer number (19528976880).

Almost surely, 2^556744286728 is an apocalyptic number.

It is an amenable number.

556744286728 is an abundant number, since it is smaller than the sum of its proper divisors (693110233592).

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

556744286728 is a wasteful number, since it uses less digits than its factorization.

556744286728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722418 (or 1722414 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 64.

The spelling of 556744286728 in words is "five hundred fifty-six billion, seven hundred forty-four million, two hundred eighty-six thousand, seven hundred twenty-eight".