16689344 has 28 divisors (see below), whose sum is σ = 37850064. Its totient is φ = 7152384.

The previous prime is 16689311. The next prime is 16689349. The reversal of 16689344 is 44398661.

16689344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (16689349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18179 + ... + 19074.

It is an arithmetic number, because the mean of its divisors is an integer number (1351788).

Almost surely, 2^16689344 is an apocalyptic number.

16689344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16689344 is an abundant number, since it is smaller than the sum of its proper divisors (21160720).

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

16689344 is an equidigital number, since it uses as much as digits as its factorization.

16689344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37272 (or 37262 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 16689344 is about 4085.2593552919. The cubic root of 16689344 is about 255.5522773226.

The spelling of 16689344 in words is "sixteen million, six hundred eighty-nine thousand, three hundred forty-four".