13569426 has 48 divisors (see below), whose sum is σ = 32026176. Its totient is φ = 4127328.

The previous prime is 13569407. The next prime is 13569433. The reversal of 13569426 is 62496531.

It is a happy number.

13569426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23821 + ... + 24383.

It is an arithmetic number, because the mean of its divisors is an integer number (667212).

Almost surely, 2^13569426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13569426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16013088).

13569426 is an abundant number, since it is smaller than the sum of its proper divisors (18456750).

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

13569426 is a wasteful number, since it uses less digits than its factorization.

13569426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 684 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13569426 is about 3683.6701806758. The cubic root of 13569426 is about 238.5176338108.

The spelling of 13569426 in words is "thirteen million, five hundred sixty-nine thousand, four hundred twenty-six".