23207643 has 12 divisors (see below), whose sum is σ = 33746128. Its totient is φ = 15368400.

The previous prime is 23207641. The next prime is 23207677. The reversal of 23207643 is 34670232.

It is not a de Polignac number, because 23207643 - 2¹ = 23207641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23207641) 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, 7180 + ... + 9897.

Almost surely, 2^23207643 is an apocalyptic number.

23207643 is a deficient number, since it is larger than the sum of its proper divisors (10538485).

23207643 is a wasteful number, since it uses less digits than its factorization.

23207643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17234 (or 17231 counting only the distinct ones).

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

The square root of 23207643 is about 4817.4311619368. The cubic root of 23207643 is about 285.2399456673.

Adding to 23207643 its reverse (34670232), we get a palindrome (57877875).

The spelling of 23207643 in words is "twenty-three million, two hundred seven thousand, six hundred forty-three".