12808635 has 32 divisors (see below), whose sum is σ = 23577600. Its totient is φ = 5816448.

The previous prime is 12808619. The next prime is 12808637. The reversal of 12808635 is 53680821.

It is a happy number.

It is not a de Polignac number, because 12808635 - 2⁴ = 12808619 is a prime.

It is a super-2 number, since 2×12808635² = 328122261126450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12808596 and 12808605.

It is not an unprimeable number, because it can be changed into a prime (12808637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20589 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (736800).

Almost surely, 2^12808635 is an apocalyptic number.

12808635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12808635 is a deficient number, since it is larger than the sum of its proper divisors (10768965).

12808635 is a wasteful number, since it uses less digits than its factorization.

12808635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12808635 is about 3578.9153384790. The cubic root of 12808635 is about 233.9740090937.

The spelling of 12808635 in words is "twelve million, eight hundred eight thousand, six hundred thirty-five".