23420205 has 16 divisors (see below), whose sum is σ = 41636160. Its totient is φ = 12490704.

The previous prime is 23420191. The next prime is 23420207. The reversal of 23420205 is 50202432.

It is not a de Polignac number, because 23420205 - 2⁷ = 23420077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420207) 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, 86607 + ... + 86876.

It is an arithmetic number, because the mean of its divisors is an integer number (2602260).

Almost surely, 2^23420205 is an apocalyptic number.

It is an amenable number.

23420205 is a deficient number, since it is larger than the sum of its proper divisors (18215955).

23420205 is a wasteful number, since it uses less digits than its factorization.

23420205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173497 (or 173491 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23420205 is about 4839.4426331965. The cubic root of 23420205 is about 286.1081510221.

Adding to 23420205 its reverse (50202432), we get a palindrome (73622637).

The spelling of 23420205 in words is "twenty-three million, four hundred twenty thousand, two hundred five".