23640273 has 12 divisors (see below), whose sum is σ = 34192080. Its totient is φ = 15739416.

The previous prime is 23640257. The next prime is 23640293. The reversal of 23640273 is 37204632.

It is not a de Polignac number, because 23640273 - 2⁴ = 23640257 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23640203) 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, 8938 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (2849340).

Almost surely, 2^23640273 is an apocalyptic number.

It is an amenable number.

23640273 is a deficient number, since it is larger than the sum of its proper divisors (10551807).

23640273 is a wasteful number, since it uses less digits than its factorization.

23640273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 23640273 is about 4862.1263866749. The cubic root of 23640273 is about 287.0014973193.

The spelling of 23640273 in words is "twenty-three million, six hundred forty thousand, two hundred seventy-three".