23406205 has 4 divisors (see below), whose sum is σ = 28087452. Its totient is φ = 18724960.

The previous prime is 23406193. The next prime is 23406221. The reversal of 23406205 is 50260432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9966649 + 13439556 = 3157^2 + 3666^2 .

It is not a de Polignac number, because 23406205 - 2⁹ = 23405693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340616 + ... + 2340625.

It is an arithmetic number, because the mean of its divisors is an integer number (7021863).

Almost surely, 2^23406205 is an apocalyptic number.

It is an amenable number.

23406205 is a deficient number, since it is larger than the sum of its proper divisors (4681247).

23406205 is an equidigital number, since it uses as much as digits as its factorization.

23406205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681246.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23406205 is about 4837.9959694072. The cubic root of 23406205 is about 286.0511302785.

Adding to 23406205 its reverse (50260432), we get a palindrome (73666637).

The spelling of 23406205 in words is "twenty-three million, four hundred six thousand, two hundred five".