20006223 has 8 divisors (see below), whose sum is σ = 27295488. Its totient is φ = 13027224.

The previous prime is 20006219. The next prime is 20006227. The reversal of 20006223 is 32260002.

It is an interprime number because it is at equal distance from previous prime (20006219) and next prime (20006227).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20006223 - 2² = 20006219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77415 + ... + 77672.

It is an arithmetic number, because the mean of its divisors is an integer number (3411936).

Almost surely, 2^20006223 is an apocalyptic number.

20006223 is a deficient number, since it is larger than the sum of its proper divisors (7289265).

20006223 is a wasteful number, since it uses less digits than its factorization.

20006223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155133.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20006223 is about 4472.8316534383. The cubic root of 20006223 is about 271.4699117748.

Adding to 20006223 its reverse (32260002), we get a palindrome (52266225).

The spelling of 20006223 in words is "twenty million, six thousand, two hundred twenty-three".