12800813 has 8 divisors (see below), whose sum is σ = 14267520. Its totient is φ = 11413440.

The previous prime is 12800797. The next prime is 12800831. The reversal of 12800813 is 31800821.

12800813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12800813 - 2⁴ = 12800797 is a prime.

It is a Duffinian number.

12800813 is a modest number, since divided by 813 gives 128 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19493 + ... + 20138.

It is an arithmetic number, because the mean of its divisors is an integer number (1783440).

Almost surely, 2^12800813 is an apocalyptic number.

It is an amenable number.

12800813 is a deficient number, since it is larger than the sum of its proper divisors (1466707).

12800813 is a wasteful number, since it uses less digits than its factorization.

12800813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39667.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 12800813 is about 3577.8223823997. The cubic root of 12800813 is about 233.9263715072.

The spelling of 12800813 in words is "twelve million, eight hundred thousand, eight hundred thirteen".