23905005 has 16 divisors (see below), whose sum is σ = 38734080. Its totient is φ = 12587328.

The previous prime is 23905001. The next prime is 23905039. The reversal of 23905005 is 50050932.

It is not a de Polignac number, because 23905005 - 2² = 23905001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23905001) 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, 8902 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (2420880).

Almost surely, 2^23905005 is an apocalyptic number.

It is an amenable number.

23905005 is a deficient number, since it is larger than the sum of its proper divisors (14829075).

23905005 is a wasteful number, since it uses less digits than its factorization.

23905005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20260.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 23905005 is about 4889.2744860562. The cubic root of 23905005 is about 288.0688372298.

Adding to 23905005 its reverse (50050932), we get a palindrome (73955937).

The spelling of 23905005 in words is "twenty-three million, nine hundred five thousand, five".