12808895 has 16 divisors (see below), whose sum is σ = 16837632. Its totient is φ = 9276960.

The previous prime is 12808891. The next prime is 12808903. The reversal of 12808895 is 59880821.

It is not a de Polignac number, because 12808895 - 2² = 12808891 is a prime.

It is a super-2 number, since 2×12808895² = 328135582242050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25214 + ... + 25716.

It is an arithmetic number, because the mean of its divisors is an integer number (1052352).

Almost surely, 2^12808895 is an apocalyptic number.

12808895 is a deficient number, since it is larger than the sum of its proper divisors (4028737).

12808895 is a wasteful number, since it uses less digits than its factorization.

12808895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 12808895 is about 3578.9516621491. The cubic root of 12808895 is about 233.9755922140.

The spelling of 12808895 in words is "twelve million, eight hundred eight thousand, eight hundred ninety-five".