20243223 has 96 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 9616320.

The previous prime is 20243219. The next prime is 20243233. The reversal of 20243223 is 32234202.

It is not a de Polignac number, because 20243223 - 2² = 20243219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20243196 and 20243205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243203) 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 95 ways as a sum of consecutive naturals, for example, 189136 + ... + 189242.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^20243223 is an apocalyptic number.

20243223 is an abundant number, since it is smaller than the sum of its proper divisors (21125097).

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

20243223 is a wasteful number, since it uses less digits than its factorization.

20243223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20243223 is about 4499.2469369885. The cubic root of 20243223 is about 272.5376790476.

Adding to 20243223 its reverse (32234202), we get a palindrome (52477425).

The spelling of 20243223 in words is "twenty million, two hundred forty-three thousand, two hundred twenty-three".