12866834 has 8 divisors (see below), whose sum is σ = 19564860. Its totient is φ = 6345216.

The previous prime is 12866831. The next prime is 12866851. The reversal of 12866834 is 43866821.

12866834 = 125² + 126² + ... + 343².

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12709225 + 157609 = 3565^2 + 397^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12866831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43919 + ... + 44210.

Almost surely, 2^12866834 is an apocalyptic number.

12866834 is a deficient number, since it is larger than the sum of its proper divisors (6698026).

12866834 is an equidigital number, since it uses as much as digits as its factorization.

12866834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88204.

The product of its digits is 55296, while the sum is 38.

The square root of 12866834 is about 3587.0369387560. The cubic root of 12866834 is about 234.3278454231.

The spelling of 12866834 in words is "twelve million, eight hundred sixty-six thousand, eight hundred thirty-four".