13287994 has 8 divisors (see below), whose sum is σ = 19951200. Its totient is φ = 6637596.

The previous prime is 13287991. The next prime is 13288007. The reversal of 13287994 is 49978231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13287994.

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 3 ways as a sum of consecutive naturals, for example, 57 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (2493900).

Almost surely, 2^13287994 is an apocalyptic number.

13287994 is a deficient number, since it is larger than the sum of its proper divisors (6663206).

13287994 is a wasteful number, since it uses less digits than its factorization.

13287994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404.

The product of its digits is 108864, while the sum is 43.

The square root of 13287994 is about 3645.2700860156. The cubic root of 13287994 is about 236.8571364478.

The spelling of 13287994 in words is "thirteen million, two hundred eighty-seven thousand, nine hundred ninety-four".