564997128 has 32 divisors (see below), whose sum is σ = 1435652160. Its totient is φ = 185244480.

The previous prime is 564997073. The next prime is 564997171. The reversal of 564997128 is 821799465.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 191500 + ... + 194427.

It is an arithmetic number, because the mean of its divisors is an integer number (44864130).

Almost surely, 2^564997128 is an apocalyptic number.

It is an amenable number.

564997128 is an abundant number, since it is smaller than the sum of its proper divisors (870655032).

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

564997128 is a wasteful number, since it uses less digits than its factorization.

564997128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385997 (or 385993 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 564997128 is about 23769.6682349586. The cubic root of 564997128 is about 826.7015401810.

The spelling of 564997128 in words is "five hundred sixty-four million, nine hundred ninety-seven thousand, one hundred twenty-eight".