12809508 has 12 divisors (see below), whose sum is σ = 29888880. Its totient is φ = 4269832.

The previous prime is 12809497. The next prime is 12809513. The reversal of 12809508 is 80590821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×12809508³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 533718 + ... + 533741.

It is an arithmetic number, because the mean of its divisors is an integer number (2490740).

Almost surely, 2^12809508 is an apocalyptic number.

It is an amenable number.

12809508 is an abundant number, since it is smaller than the sum of its proper divisors (17079372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12809508 is a wasteful number, since it uses less digits than its factorization.

12809508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067466 (or 1067464 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 12809508 is about 3579.0373007277. The cubic root of 12809508 is about 233.9793246398.

The spelling of 12809508 in words is "twelve million, eight hundred nine thousand, five hundred eight".