16002320 has 20 divisors (see below), whose sum is σ = 37205580. Its totient is φ = 6400896.

The previous prime is 16002299. The next prime is 16002323. The reversal of 16002320 is 2320061.

It can be written as a sum of positive squares in 2 ways, for example, as 8690704 + 7311616 = 2948^2 + 2704^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 16002295 and 16002304.

It is not an unprimeable number, because it can be changed into a prime (16002323) 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, 99935 + ... + 100094.

It is an arithmetic number, because the mean of its divisors is an integer number (1860279).

Almost surely, 2^16002320 is an apocalyptic number.

16002320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16002320 is an abundant number, since it is smaller than the sum of its proper divisors (21203260).

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

16002320 is a wasteful number, since it uses less digits than its factorization.

16002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200042 (or 200036 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 16002320 is about 4000.2899894883. The cubic root of 16002320 is about 251.9963886272.

Adding to 16002320 its reverse (2320061), we get a palindrome (18322381).

The spelling of 16002320 in words is "sixteen million, two thousand, three hundred twenty".