23540205 has 32 divisors (see below), whose sum is σ = 41247360. Its totient is φ = 11393280.

The previous prime is 23540203. The next prime is 23540207. The reversal of 23540205 is 50204532.

It is an interprime number because it is at equal distance from previous prime (23540203) and next prime (23540207).

It is not a de Polignac number, because 23540205 - 2¹ = 23540203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10906 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^23540205 is an apocalyptic number.

It is an amenable number.

23540205 is a deficient number, since it is larger than the sum of its proper divisors (17707155).

23540205 is a wasteful number, since it uses less digits than its factorization.

23540205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 23540205 is about 4851.8249144008. The cubic root of 23540205 is about 286.5959706384.

Adding to 23540205 its reverse (50204532), we get a palindrome (73744737).

The spelling of 23540205 in words is "twenty-three million, five hundred forty thousand, two hundred five".