16444688 has 40 divisors (see below), whose sum is σ = 34586328. Its totient is φ = 7529472.

The previous prime is 16444679. The next prime is 16444691. The reversal of 16444688 is 88644461.

It can be written as a sum of positive squares in 4 ways, for example, as 5895184 + 10549504 = 2428^2 + 3248^2 .

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 7 ways as a sum of consecutive naturals, for example, 35756 + ... + 36212.

Almost surely, 2^16444688 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 16444688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17293164).

16444688 is an abundant number, since it is smaller than the sum of its proper divisors (18141640).

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

16444688 is a wasteful number, since it uses less digits than its factorization.

16444688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 645 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 16444688 is about 4055.2050503026. The cubic root of 16444688 is about 254.2973762995.

The spelling of 16444688 in words is "sixteen million, four hundred forty-four thousand, six hundred eighty-eight".