23940243 has 12 divisors (see below), whose sum is σ = 35148048. Its totient is φ = 15698160.

The previous prime is 23940223. The next prime is 23940251. The reversal of 23940243 is 34204932.

It is a happy number.

It is not a de Polignac number, because 23940243 - 2⁶ = 23940179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23940223) 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 11 ways as a sum of consecutive naturals, for example, 21255 + ... + 22352.

It is an arithmetic number, because the mean of its divisors is an integer number (2929004).

Almost surely, 2^23940243 is an apocalyptic number.

23940243 is a deficient number, since it is larger than the sum of its proper divisors (11207805).

23940243 is a wasteful number, since it uses less digits than its factorization.

23940243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43674 (or 43671 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23940243 is about 4892.8767611703. The cubic root of 23940243 is about 288.2103136831.

The spelling of 23940243 in words is "twenty-three million, nine hundred forty thousand, two hundred forty-three".