12689476 has 12 divisors (see below), whose sum is σ = 22252860. Its totient is φ = 6331520.

The previous prime is 12689423. The next prime is 12689477. The reversal of 12689476 is 67498621.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 9449476 = 1800^2 + 3074^2 .

It is a super-2 number, since 2×12689476² = 322045602309152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (1854405).

Almost surely, 2^12689476 is an apocalyptic number.

It is an amenable number.

12689476 is a deficient number, since it is larger than the sum of its proper divisors (9563384).

12689476 is a wasteful number, since it uses less digits than its factorization.

12689476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6614 (or 6612 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 12689476 is about 3562.2290774177. The cubic root of 12689476 is about 233.2461924036.

The spelling of 12689476 in words is "twelve million, six hundred eighty-nine thousand, four hundred seventy-six".