13278073 has 2 divisors, whose sum is σ = 13278074. Its totient is φ = 13278072.

The previous prime is 13278059. The next prime is 13278103. The reversal of 13278073 is 37087231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8020224 + 5257849 = 2832^2 + 2293^2 .

It is a cyclic number.

It is not a de Polignac number, because 13278073 - 2¹³ = 13269881 is a prime.

It is not a weakly prime, because it can be changed into another prime (13278973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6639036 + 6639037.

It is an arithmetic number, because the mean of its divisors is an integer number (6639037).

Almost surely, 2^13278073 is an apocalyptic number.

It is an amenable number.

13278073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13278073 is an equidigital number, since it uses as much as digits as its factorization.

13278073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 13278073 is about 3643.9090274045. The cubic root of 13278073 is about 236.7981748341.

The spelling of 13278073 in words is "thirteen million, two hundred seventy-eight thousand, seventy-three".