13678426 has 4 divisors (see below), whose sum is σ = 20517642. Its totient is φ = 6839212.

The previous prime is 13678417. The next prime is 13678433. The reversal of 13678426 is 62487631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62487631 = 17 ⋅3675743.

It can be written as a sum of positive squares in only one way, i.e., 11229201 + 2449225 = 3351^2 + 1565^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419605 + ... + 3419608.

Almost surely, 2^13678426 is an apocalyptic number.

13678426 is a deficient number, since it is larger than the sum of its proper divisors (6839216).

13678426 is an equidigital number, since it uses as much as digits as its factorization.

13678426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839215.

The product of its digits is 48384, while the sum is 37.

The square root of 13678426 is about 3698.4356152298. The cubic root of 13678426 is about 239.1545833282.

The spelling of 13678426 in words is "thirteen million, six hundred seventy-eight thousand, four hundred twenty-six".