23305205 has 24 divisors (see below), whose sum is σ = 35137536. Its totient is φ = 14525280.

The previous prime is 23305201. The next prime is 23305223. The reversal of 23305205 is 50250332.

It is not a de Polignac number, because 23305205 - 2² = 23305201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23305201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1484 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (1464064).

Almost surely, 2^23305205 is an apocalyptic number.

It is an amenable number.

23305205 is a deficient number, since it is larger than the sum of its proper divisors (11832331).

23305205 is a wasteful number, since it uses less digits than its factorization.

23305205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 23305205 is about 4827.5464782848. The cubic root of 23305205 is about 285.6390911048.

Adding to 23305205 its reverse (50250332), we get a palindrome (73555537).

The spelling of 23305205 in words is "twenty-three million, three hundred five thousand, two hundred five".