23440023 has 12 divisors (see below), whose sum is σ = 35112168. Its totient is φ = 15626520.

The previous prime is 23440003. The next prime is 23440037. The reversal of 23440023 is 32004432.

It is not a de Polignac number, because 23440023 - 2¹⁶ = 23374487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23439978 and 23440005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47988 + ... + 48473.

It is an arithmetic number, because the mean of its divisors is an integer number (2926014).

Almost surely, 2^23440023 is an apocalyptic number.

23440023 is a deficient number, since it is larger than the sum of its proper divisors (11672145).

23440023 is an frugal number, since it uses more digits than its factorization.

23440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96476 (or 96464 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23440023 is about 4841.4897500666. The cubic root of 23440023 is about 286.1888291198.

Adding to 23440023 its reverse (32004432), we get a palindrome (55444455).

The spelling of 23440023 in words is "twenty-three million, four hundred forty thousand, twenty-three".