13279257 has 12 divisors (see below), whose sum is σ = 20015424. Its totient is φ = 8467800.

The previous prime is 13279249. The next prime is 13279267. The reversal of 13279257 is 75297231.

It is not a de Polignac number, because 13279257 - 2³ = 13279249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13279207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31869 + ... + 32282.

It is an arithmetic number, because the mean of its divisors is an integer number (1667952).

Almost surely, 2^13279257 is an apocalyptic number.

It is an amenable number.

13279257 is a deficient number, since it is larger than the sum of its proper divisors (6736167).

13279257 is a wasteful number, since it uses less digits than its factorization.

13279257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64180 (or 64177 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 13279257 is about 3644.0714866753. The cubic root of 13279257 is about 236.8052130217.

The spelling of 13279257 in words is "thirteen million, two hundred seventy-nine thousand, two hundred fifty-seven".