20560233 has 16 divisors (see below), whose sum is σ = 28031936. Its totient is φ = 13400640.

The previous prime is 20560213. The next prime is 20560247. The reversal of 20560233 is 33206502.

It is not a de Polignac number, because 20560233 - 2¹⁴ = 20543849 is a prime.

It is a Duffinian 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, 51591 + ... + 51987.

It is an arithmetic number, because the mean of its divisors is an integer number (1751996).

Almost surely, 2^20560233 is an apocalyptic number.

It is an amenable number.

20560233 is a deficient number, since it is larger than the sum of its proper divisors (7471703).

20560233 is a wasteful number, since it uses less digits than its factorization.

20560233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20560233 is about 4534.3393124026. The cubic root of 20560233 is about 273.9529684669.

Adding to 20560233 its reverse (33206502), we get a palindrome (53766735).

The spelling of 20560233 in words is "twenty million, five hundred sixty thousand, two hundred thirty-three".