13432566 has 64 divisors (see below), whose sum is σ = 32140800. Its totient is φ = 3739680.

The previous prime is 13432547. The next prime is 13432571. The reversal of 13432566 is 66523431.

Its product of digits (12960) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125485 + ... + 125591.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^13432566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13432566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16070400).

13432566 is an abundant number, since it is smaller than the sum of its proper divisors (18708234).

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

13432566 is a wasteful number, since it uses less digits than its factorization.

13432566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 180 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 13432566 is about 3665.0465208507. The cubic root of 13432566 is about 237.7130336013.

Adding to 13432566 its reverse (66523431), we get a palindrome (79955997).

The spelling of 13432566 in words is "thirteen million, four hundred thirty-two thousand, five hundred sixty-six".