16809324 has 48 divisors (see below), whose sum is σ = 45308928. Its totient is φ = 4750848.

The previous prime is 16809323. The next prime is 16809349. The reversal of 16809324 is 42390861.

It is not an unprimeable number, because it can be changed into a prime (16809323) 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 15 ways as a sum of consecutive naturals, for example, 7117 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (943936).

Almost surely, 2^16809324 is an apocalyptic number.

16809324 is a gapful number since it is divisible by the number (14) 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 16809324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22654464).

16809324 is an abundant number, since it is smaller than the sum of its proper divisors (28499604).

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

16809324 is a wasteful number, since it uses less digits than its factorization.

16809324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 16809324 is about 4099.9175601468. The cubic root of 16809324 is about 256.1632056637.

The spelling of 16809324 in words is "sixteen million, eight hundred nine thousand, three hundred twenty-four".