23400207 has 12 divisors (see below), whose sum is σ = 34004880. Its totient is φ = 15505728.

The previous prime is 23400203. The next prime is 23400239. The reversal of 23400207 is 70200432.

It is a happy number.

It is not a de Polignac number, because 23400207 - 2² = 23400203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23400207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400203) 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, 6282 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (2833740).

Almost surely, 2^23400207 is an apocalyptic number.

23400207 is a deficient number, since it is larger than the sum of its proper divisors (10604673).

23400207 is a wasteful number, since it uses less digits than its factorization.

23400207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742 (or 15739 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 23400207 is about 4837.3760449235. The cubic root of 23400207 is about 286.0266940054.

Adding to 23400207 its reverse (70200432), we get a palindrome (93600639).

The spelling of 23400207 in words is "twenty-three million, four hundred thousand, two hundred seven".