12689896 has 24 divisors (see below), whose sum is σ = 24383430. Its totient is φ = 6189248.

The previous prime is 12689893. The next prime is 12689923. The reversal of 12689896 is 69898621.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12180100 + 509796 = 3490^2 + 714^2 .

It is a super-2 number, since 2×12689896² = 322066920981632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73266 + ... + 73438.

Almost surely, 2^12689896 is an apocalyptic number.

It is an amenable number.

12689896 is a deficient number, since it is larger than the sum of its proper divisors (11693534).

12689896 is an equidigital number, since it uses as much as digits as its factorization.

12689896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 228 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 12689896 is about 3562.2880287815. The cubic root of 12689896 is about 233.2487657255.

The spelling of 12689896 in words is "twelve million, six hundred eighty-nine thousand, eight hundred ninety-six".