13212768 has 24 divisors (see below), whose sum is σ = 34683768. Its totient is φ = 4404224.

The previous prime is 13212767. The next prime is 13212799. The reversal of 13212768 is 86721231.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212763) 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, 68721 + ... + 68912.

It is an arithmetic number, because the mean of its divisors is an integer number (1445157).

Almost surely, 2^13212768 is an apocalyptic number.

It is an amenable number.

13212768 is an abundant number, since it is smaller than the sum of its proper divisors (21471000).

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

13212768 is a wasteful number, since it uses less digits than its factorization.

13212768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137646 (or 137638 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 13212768 is about 3634.9371383836. The cubic root of 13212768 is about 236.4093250750.

Adding to 13212768 its reverse (86721231), we get a palindrome (99933999).

The spelling of 13212768 in words is "thirteen million, two hundred twelve thousand, seven hundred sixty-eight".