20560204 has 36 divisors (see below), whose sum is σ = 44065560. Its totient is φ = 8346240.

The previous prime is 20560193. The next prime is 20560207. The reversal of 20560204 is 40206502.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20560207) 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 11 ways as a sum of consecutive naturals, for example, 964 + ... + 6484.

Almost surely, 2^20560204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20560204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22032780).

20560204 is an abundant number, since it is smaller than the sum of its proper divisors (23505356).

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

20560204 is a wasteful number, since it uses less digits than its factorization.

20560204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558 (or 5549 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20560204 is about 4534.3361145817. The cubic root of 20560204 is about 273.9528396642.

Adding to 20560204 its reverse (40206502), we get a palindrome (60766706).

The spelling of 20560204 in words is "twenty million, five hundred sixty thousand, two hundred four".