23040645 has 16 divisors (see below), whose sum is σ = 38136960. Its totient is φ = 11864384.

The previous prime is 23040643. The next prime is 23040653. The reversal of 23040645 is 54604032.

It is a cyclic number.

It is not a de Polignac number, because 23040645 - 2¹ = 23040643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26049 + ... + 26918.

It is an arithmetic number, because the mean of its divisors is an integer number (2383560).

Almost surely, 2^23040645 is an apocalyptic number.

It is an amenable number.

23040645 is a deficient number, since it is larger than the sum of its proper divisors (15096315).

23040645 is a wasteful number, since it uses less digits than its factorization.

23040645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53004.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 23040645 is about 4800.0671870298. The cubic root of 23040645 is about 284.5541196541.

Adding to 23040645 its reverse (54604032), we get a palindrome (77644677).

The spelling of 23040645 in words is "twenty-three million, forty thousand, six hundred forty-five".