12800836 has 6 divisors (see below), whose sum is σ = 22401470. Its totient is φ = 6400416.

The previous prime is 12800833. The next prime is 12800849. The reversal of 12800836 is 63800821.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 1308736 = 3390^2 + 1144^2 .

It is a super-2 number, since 2×12800836² = 327722804597792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12800831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600101 + ... + 1600108.

Almost surely, 2^12800836 is an apocalyptic number.

It is an amenable number.

12800836 is a deficient number, since it is larger than the sum of its proper divisors (9600634).

12800836 is a wasteful number, since it uses less digits than its factorization.

12800836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200213 (or 3200211 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12800836 is about 3577.8255966439. The cubic root of 12800836 is about 233.9265116104.

The spelling of 12800836 in words is "twelve million, eight hundred thousand, eight hundred thirty-six".