20560223 has 16 divisors (see below), whose sum is σ = 22717440. Its totient is φ = 18532800.

The previous prime is 20560213. The next prime is 20560247. The reversal of 20560223 is 32206502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20560223 - 2⁴ = 20560207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20560195 and 20560204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39203 + ... + 39723.

It is an arithmetic number, because the mean of its divisors is an integer number (1419840).

Almost surely, 2^20560223 is an apocalyptic number.

20560223 is a deficient number, since it is larger than the sum of its proper divisors (2157217).

20560223 is a wasteful number, since it uses less digits than its factorization.

20560223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20560223 is about 4534.3382097060. The cubic root of 20560223 is about 273.9529240522.

Adding to 20560223 its reverse (32206502), we get a palindrome (52766725).

The spelling of 20560223 in words is "twenty million, five hundred sixty thousand, two hundred twenty-three".