23040945 has 12 divisors (see below), whose sum is σ = 39937716. Its totient is φ = 12288480.

The previous prime is 23040931. The next prime is 23040971. The reversal of 23040945 is 54904032.

It can be written as a sum of positive squares in 2 ways, for example, as 15944049 + 7096896 = 3993^2 + 2664^2 .

It is not a de Polignac number, because 23040945 - 2⁴ = 23040929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255966 + ... + 256055.

It is an arithmetic number, because the mean of its divisors is an integer number (3328143).

Almost surely, 2^23040945 is an apocalyptic number.

It is an amenable number.

23040945 is a deficient number, since it is larger than the sum of its proper divisors (16896771).

23040945 is a wasteful number, since it uses less digits than its factorization.

23040945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512032 (or 512029 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23040945 is about 4800.0984364907. The cubic root of 23040945 is about 284.5553546581. Note that the first 3 decimals are identical.

Adding to 23040945 its reverse (54904032), we get a palindrome (77944977).

The spelling of 23040945 in words is "twenty-three million, forty thousand, nine hundred forty-five".