13215768 has 16 divisors (see below), whose sum is σ = 33039480. Its totient is φ = 4405248.

The previous prime is 13215767. The next prime is 13215779. The reversal of 13215768 is 86751231.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215767) 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, 275305 + ... + 275352.

Almost surely, 2^13215768 is an apocalyptic number.

It is an amenable number.

13215768 is an abundant number, since it is smaller than the sum of its proper divisors (19823712).

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

13215768 is a wasteful number, since it uses less digits than its factorization.

13215768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550666 (or 550662 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 13215768 is about 3635.3497768440. The cubic root of 13215768 is about 236.4272162114.

Adding to 13215768 its reverse (86751231), we get a palindrome (99966999).

The spelling of 13215768 in words is "thirteen million, two hundred fifteen thousand, seven hundred sixty-eight".