23040447 has 4 divisors (see below), whose sum is σ = 30720600. Its totient is φ = 15360296.

The previous prime is 23040443. The next prime is 23040449. The reversal of 23040447 is 74404032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23040447 - 2² = 23040443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3840072 + ... + 3840077.

It is an arithmetic number, because the mean of its divisors is an integer number (7680150).

Almost surely, 2^23040447 is an apocalyptic number.

23040447 is a deficient number, since it is larger than the sum of its proper divisors (7680153).

23040447 is an equidigital number, since it uses as much as digits as its factorization.

23040447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680152.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 23040447 is about 4800.0465622742. The cubic root of 23040447 is about 284.5533045456.

Adding to 23040447 its reverse (74404032), we get a palindrome (97444479).

The spelling of 23040447 in words is "twenty-three million, forty thousand, four hundred forty-seven".