23305745 has 16 divisors (see below), whose sum is σ = 28892160. Its totient is φ = 18033984.

The previous prime is 23305717. The next prime is 23305771. The reversal of 23305745 is 54750332.

It is a cyclic number.

It is not a de Polignac number, because 23305745 - 2⁸ = 23305489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48416 + ... + 48894.

It is an arithmetic number, because the mean of its divisors is an integer number (1805760).

Almost surely, 2^23305745 is an apocalyptic number.

It is an amenable number.

23305745 is a deficient number, since it is larger than the sum of its proper divisors (5586415).

23305745 is a wasteful number, since it uses less digits than its factorization.

23305745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 23305745 is about 4827.6024069925. The cubic root of 23305745 is about 285.6412972488.

The spelling of 23305745 in words is "twenty-three million, three hundred five thousand, seven hundred forty-five".