13216452 has 12 divisors (see below), whose sum is σ = 30838416. Its totient is φ = 4405480.

The previous prime is 13216433. The next prime is 13216477. The reversal of 13216452 is 25461231.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 550674 + ... + 550697.

It is an arithmetic number, because the mean of its divisors is an integer number (2569868).

Almost surely, 2^13216452 is an apocalyptic number.

13216452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13216452 is an abundant number, since it is smaller than the sum of its proper divisors (17621964).

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

13216452 is a wasteful number, since it uses less digits than its factorization.

13216452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101378 (or 1101376 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 13216452 is about 3635.4438518563. The cubic root of 13216452 is about 236.4312950115.

Adding to 13216452 its reverse (25461231), we get a palindrome (38677683).

The spelling of 13216452 in words is "thirteen million, two hundred sixteen thousand, four hundred fifty-two".