23026221 has 16 divisors (see below), whose sum is σ = 34758720. Its totient is φ = 15060240.

The previous prime is 23026207. The next prime is 23026229. The reversal of 23026221 is 12262032.

It is not a de Polignac number, because 23026221 - 2¹⁹ = 22501933 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23026194 and 23026203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23026229) 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, 6615 + ... + 9476.

It is an arithmetic number, because the mean of its divisors is an integer number (2172420).

Almost surely, 2^23026221 is an apocalyptic number.

It is an amenable number.

23026221 is a deficient number, since it is larger than the sum of its proper divisors (11732499).

23026221 is a wasteful number, since it uses less digits than its factorization.

23026221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16153 (or 16147 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23026221 is about 4798.5644728398. The cubic root of 23026221 is about 284.4947280094.

Adding to 23026221 its reverse (12262032), we get a palindrome (35288253).

The spelling of 23026221 in words is "twenty-three million, twenty-six thousand, two hundred twenty-one".