13287996 has 48 divisors (see below), whose sum is σ = 35032480. Its totient is φ = 4354560.

The previous prime is 13287991. The next prime is 13288007. The reversal of 13287996 is 69978231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287991) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5580 + ... + 7596.

Almost surely, 2^13287996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13287996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17516240).

13287996 is an abundant number, since it is smaller than the sum of its proper divisors (21744484).

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

13287996 is a wasteful number, since it uses less digits than its factorization.

13287996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2083 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 13287996 is about 3645.2703603437. The cubic root of 13287996 is about 236.8571483311.

The spelling of 13287996 in words is "thirteen million, two hundred eighty-seven thousand, nine hundred ninety-six".