20650223 has 12 divisors (see below), whose sum is σ = 24035760. Its totient is φ = 17666880.

The previous prime is 20650219. The next prime is 20650229. The reversal of 20650223 is 32205602.

It is a happy number.

It is not a de Polignac number, because 20650223 - 2² = 20650219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20650195 and 20650204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2963 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (2002980).

Almost surely, 2^20650223 is an apocalyptic number.

20650223 is a deficient number, since it is larger than the sum of its proper divisors (3385537).

20650223 is a wasteful number, since it uses less digits than its factorization.

20650223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078 (or 10067 counting only the distinct ones).

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

The square root of 20650223 is about 4544.2516435602. The cubic root of 20650223 is about 274.3520746270.

Adding to 20650223 its reverse (32205602), we get a palindrome (52855825).

The spelling of 20650223 in words is "twenty million, six hundred fifty thousand, two hundred twenty-three".