13216028 has 24 divisors (see below), whose sum is σ = 26672352. Its totient is φ = 5612544.

The previous prime is 13216009. The next prime is 13216031. The reversal of 13216028 is 82061231.

It is a junction number, because it is equal to n+sod(n) for n = 13215994 and 13216012.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1076 + ... + 5252.

It is an arithmetic number, because the mean of its divisors is an integer number (1111348).

Almost surely, 2^13216028 is an apocalyptic number.

It is an amenable number.

13216028 is an abundant number, since it is smaller than the sum of its proper divisors (13456324).

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

13216028 is a wasteful number, since it uses less digits than its factorization.

13216028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301 (or 4299 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13216028 is about 3635.3855366384. The cubic root of 13216028 is about 236.4287666491.

Adding to 13216028 its reverse (82061231), we get a palindrome (95277259).

The spelling of 13216028 in words is "thirteen million, two hundred sixteen thousand, twenty-eight".