555645728 has 96 divisors (see below), whose sum is σ = 1264999680. Its totient is φ = 237600000.

The previous prime is 555645721. The next prime is 555645733. The reversal of 555645728 is 827546555.

It is not an unprimeable number, because it can be changed into a prime (555645721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678523 + ... + 1678853.

It is an arithmetic number, because the mean of its divisors is an integer number (13177080).

Almost surely, 2^555645728 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 555645728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632499840).

555645728 is an abundant number, since it is smaller than the sum of its proper divisors (709353952).

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

555645728 is a wasteful number, since it uses less digits than its factorization.

555645728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 614 counting only the distinct ones).

The product of its digits is 1680000, while the sum is 47.

The square root of 555645728 is about 23572.1388083475. The cubic root of 555645728 is about 822.1151659116.

The spelling of 555645728 in words is "five hundred fifty-five million, six hundred forty-five thousand, seven hundred twenty-eight".