13204566 has 16 divisors (see below), whose sum is σ = 29343600. Its totient is φ = 4401504.

The previous prime is 13204559. The next prime is 13204567. The reversal of 13204566 is 66540231.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204567) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 122211 + ... + 122318.

It is an arithmetic number, because the mean of its divisors is an integer number (1833975).

Almost surely, 2^13204566 is an apocalyptic number.

13204566 is an abundant number, since it is smaller than the sum of its proper divisors (16139034).

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

13204566 is a wasteful number, since it uses less digits than its factorization.

13204566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244540 (or 244534 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13204566 is about 3633.8087456552. The cubic root of 13204566 is about 236.3603968805.

Adding to 13204566 its reverse (66540231), we get a palindrome (79744797).

It can be divided in two parts, 1320 and 4566, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 13204566 in words is "thirteen million, two hundred four thousand, five hundred sixty-six".