13278713 has 4 divisors (see below), whose sum is σ = 15175680. Its totient is φ = 11381748.

The previous prime is 13278709. The next prime is 13278719. The reversal of 13278713 is 31787231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13278713 - 2² = 13278709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13278713.

It is not an unprimeable number, because it can be changed into a prime (13278719) 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, 948473 + ... + 948486.

It is an arithmetic number, because the mean of its divisors is an integer number (3793920).

Almost surely, 2^13278713 is an apocalyptic number.

It is an amenable number.

13278713 is a deficient number, since it is larger than the sum of its proper divisors (1896967).

13278713 is an equidigital number, since it uses as much as digits as its factorization.

13278713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896966.

The product of its digits is 7056, while the sum is 32.

The square root of 13278713 is about 3643.9968441260. The cubic root of 13278713 is about 236.8019793118.

The spelling of 13278713 in words is "thirteen million, two hundred seventy-eight thousand, seven hundred thirteen".