16305864 has 64 divisors (see below), whose sum is σ = 42517440. Its totient is φ = 5207040.

The previous prime is 16305847. The next prime is 16305871. The reversal of 16305864 is 46850361.

It is an unprimeable number.

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, 71719 + ... + 71945.

It is an arithmetic number, because the mean of its divisors is an integer number (664335).

Almost surely, 2^16305864 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 16305864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21258720).

16305864 is an abundant number, since it is smaller than the sum of its proper divisors (26211576).

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

16305864 is a wasteful number, since it uses less digits than its factorization.

16305864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 16305864 is about 4038.0520056086. The cubic root of 16305864 is about 253.5797709652.

The spelling of 16305864 in words is "sixteen million, three hundred five thousand, eight hundred sixty-four".