13566426 has 8 divisors (see below), whose sum is σ = 27132864. Its totient is φ = 4522140.

The previous prime is 13566407. The next prime is 13566431. The reversal of 13566426 is 62466531.

13566426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

13566426 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130530 + ... + 1130541.

It is an arithmetic number, because the mean of its divisors is an integer number (3391608).

Almost surely, 2^13566426 is an apocalyptic number.

13566426 is the 2330-th centered pentagonal number.

13566426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13566426 is a wasteful number, since it uses less digits than its factorization.

13566426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261076.

The product of its digits is 25920, while the sum is 33.

The square root of 13566426 is about 3683.2629555871. The cubic root of 13566426 is about 238.5000549380.

The spelling of 13566426 in words is "thirteen million, five hundred sixty-six thousand, four hundred twenty-six".