23640197 has 24 divisors (see below), whose sum is σ = 28892160. Its totient is φ = 19262880.

The previous prime is 23640193. The next prime is 23640203. The reversal of 23640197 is 79104632.

It is not a de Polignac number, because 23640197 - 2² = 23640193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23640193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119903 + ... + 120099.

It is an arithmetic number, because the mean of its divisors is an integer number (1203840).

Almost surely, 2^23640197 is an apocalyptic number.

It is an amenable number.

23640197 is a deficient number, since it is larger than the sum of its proper divisors (5251963).

23640197 is a wasteful number, since it uses less digits than its factorization.

23640197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 23640197 is about 4862.1185711581. The cubic root of 23640197 is about 287.0011897631.

The spelling of 23640197 in words is "twenty-three million, six hundred forty thousand, one hundred ninety-seven".