12813806 has 8 divisors (see below), whose sum is σ = 20056464. Its totient is φ = 6128320.

The previous prime is 12813791. The next prime is 12813833. The reversal of 12813806 is 60831821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139235 + ... + 139326.

It is an arithmetic number, because the mean of its divisors is an integer number (2507058).

Almost surely, 2^12813806 is an apocalyptic number.

12813806 is a deficient number, since it is larger than the sum of its proper divisors (7242658).

12813806 is a wasteful number, since it uses less digits than its factorization.

12813806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278586.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 12813806 is about 3579.6376911637. The cubic root of 12813806 is about 234.0054908980.

The spelling of 12813806 in words is "twelve million, eight hundred thirteen thousand, eight hundred six".