13278347 has 2 divisors, whose sum is σ = 13278348. Its totient is φ = 13278346.

The previous prime is 13278329. The next prime is 13278361. The reversal of 13278347 is 74387231.

13278347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13278347 - 2¹² = 13274251 is a prime.

It is not a weakly prime, because it can be changed into another prime (13278367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6639173 + 6639174.

It is an arithmetic number, because the mean of its divisors is an integer number (6639174).

Almost surely, 2^13278347 is an apocalyptic number.

13278347 is a deficient number, since it is larger than the sum of its proper divisors (1).

13278347 is an equidigital number, since it uses as much as digits as its factorization.

13278347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 13278347 is about 3643.9466241975. The cubic root of 13278347 is about 236.7998036411.

The spelling of 13278347 in words is "thirteen million, two hundred seventy-eight thousand, three hundred forty-seven".