16564328 has 32 divisors (see below), whose sum is σ = 34715520. Its totient is φ = 7344000.

The previous prime is 16564321. The next prime is 16564337. The reversal of 16564328 is 82346561.

It is not an unprimeable number, because it can be changed into a prime (16564321) 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 7 ways as a sum of consecutive naturals, for example, 1313 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 2^16564328 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 16564328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17357760).

16564328 is an abundant number, since it is smaller than the sum of its proper divisors (18151192).

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

16564328 is a wasteful number, since it uses less digits than its factorization.

16564328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649 (or 4645 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 16564328 is about 4069.9297291231. The cubic root of 16564328 is about 254.9125831335.

The spelling of 16564328 in words is "sixteen million, five hundred sixty-four thousand, three hundred twenty-eight".