16564016 has 40 divisors (see below), whose sum is σ = 37211904. Its totient is φ = 6995520.

The previous prime is 16564007. The next prime is 16564021. The reversal of 16564016 is 61046561.

It is a self number, because there is not a number n which added to its sum of digits gives 16564016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6911 + ... + 8993.

Almost surely, 2^16564016 is an apocalyptic number.

16564016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16564016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18605952).

16564016 is an abundant number, since it is smaller than the sum of its proper divisors (20647888).

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

16564016 is a wasteful number, since it uses less digits than its factorization.

16564016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 16564016 is about 4069.8913990425. The cubic root of 16564016 is about 254.9109826414.

The spelling of 16564016 in words is "sixteen million, five hundred sixty-four thousand, sixteen".