16320320 has 28 divisors (see below), whose sum is σ = 38863524. Its totient is φ = 6528000.

The previous prime is 16320313. The next prime is 16320331. The reversal of 16320320 is 2302361.

It can be written as a sum of positive squares in 2 ways, for example, as 9684544 + 6635776 = 3112^2 + 2576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25181 + ... + 25820.

It is an arithmetic number, because the mean of its divisors is an integer number (1387983).

Almost surely, 2^16320320 is an apocalyptic number.

16320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16320320 is an abundant number, since it is smaller than the sum of its proper divisors (22543204).

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

16320320 is an equidigital number, since it uses as much as digits as its factorization.

16320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51018 (or 51008 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 16320320 is about 4039.8415810524. The cubic root of 16320320 is about 253.6546860675.

Adding to 16320320 its reverse (2302361), we get a palindrome (18622681).

The spelling of 16320320 in words is "sixteen million, three hundred twenty thousand, three hundred twenty".