23540045 has 16 divisors (see below), whose sum is σ = 28873152. Its totient is φ = 18420480.

The previous prime is 23540039. The next prime is 23540059. The reversal of 23540045 is 54004532.

It is not a de Polignac number, because 23540045 - 2¹² = 23535949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23540045.

It is a congruent number.

It is an unprimeable number.

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, 54149 + ... + 54581.

It is an arithmetic number, because the mean of its divisors is an integer number (1804572).

Almost surely, 2^23540045 is an apocalyptic number.

It is an amenable number.

23540045 is a deficient number, since it is larger than the sum of its proper divisors (5333107).

23540045 is a wasteful number, since it uses less digits than its factorization.

23540045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 23540045 is about 4851.8084257316. The cubic root of 23540045 is about 286.5953213173.

Adding to 23540045 its reverse (54004532), we get a palindrome (77544577).

The spelling of 23540045 in words is "twenty-three million, five hundred forty thousand, forty-five".