16328320 has 64 divisors (see below), whose sum is σ = 40343040. Its totient is φ = 6312960.

The previous prime is 16328311. The next prime is 16328329. The reversal of 16328320 is 2382361.

It is an interprime number because it is at equal distance from previous prime (16328311) and next prime (16328329).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×16328320² = 533228068044800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16328329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19429 + ... + 20251.

It is an arithmetic number, because the mean of its divisors is an integer number (630360).

Almost surely, 2^16328320 is an apocalyptic number.

16328320 is a gapful number since it is divisible by the number (10) 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 16328320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20171520).

16328320 is an abundant number, since it is smaller than the sum of its proper divisors (24014720).

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

16328320 is an equidigital number, since it uses as much as digits as its factorization.

16328320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16328320 is about 4040.8315975799. The cubic root of 16328320 is about 253.6961253287.

The spelling of 16328320 in words is "sixteen million, three hundred twenty-eight thousand, three hundred twenty".