13276309 has 6 divisors (see below), whose sum is σ = 13436610. Its totient is φ = 13116816.

The previous prime is 13276301. The next prime is 13276327. The reversal of 13276309 is 90367231.

It can be written as a sum of positive squares in 3 ways, for example, as 6002500 + 7273809 = 2450^2 + 2697^2 .

It is not a de Polignac number, because 13276309 - 2³ = 13276301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13276301) 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 5 ways as a sum of consecutive naturals, for example, 37867 + ... + 38215.

It is an arithmetic number, because the mean of its divisors is an integer number (2239435).

Almost surely, 2^13276309 is an apocalyptic number.

It is an amenable number.

13276309 is a deficient number, since it is larger than the sum of its proper divisors (160301).

13276309 is an frugal number, since it uses more digits than its factorization.

13276309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 13276309 is about 3643.6669716098. Note that the first 3 decimals coincide. The cubic root of 13276309 is about 236.7876881097.

The spelling of 13276309 in words is "thirteen million, two hundred seventy-six thousand, three hundred nine".