16213316 has 18 divisors (see below), whose sum is σ = 33006078. Its totient is φ = 6948480.

The previous prime is 16213313. The next prime is 16213319. The reversal of 16213316 is 61331261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16213313) and next prime (16213319).

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 5017600 = 3346^2 + 2240^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16213291 and 16213300.

It is not an unprimeable number, because it can be changed into a prime (16213313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41165 + ... + 41556.

It is an arithmetic number, because the mean of its divisors is an integer number (1833671).

Almost surely, 2^16213316 is an apocalyptic number.

It is an amenable number.

16213316 is an abundant number, since it is smaller than the sum of its proper divisors (16792762).

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

16213316 is a wasteful number, since it uses less digits than its factorization.

16213316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82739 (or 82730 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 16213316 is about 4026.5762131121. The cubic root of 16213316 is about 253.0991086864.

Adding to 16213316 its reverse (61331261), we get a palindrome (77544577).

The spelling of 16213316 in words is "sixteen million, two hundred thirteen thousand, three hundred sixteen".