23640126 has 8 divisors (see below), whose sum is σ = 47280264. Its totient is φ = 7880040.

The previous prime is 23640121. The next prime is 23640137. The reversal of 23640126 is 62104632.

It is a sphenic number, since it is the product of 3 distinct primes.

23640126 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23640096 and 23640105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23640121) 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 3 ways as a sum of consecutive naturals, for example, 1970005 + ... + 1970016.

It is an arithmetic number, because the mean of its divisors is an integer number (5910033).

Almost surely, 2^23640126 is an apocalyptic number.

23640126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23640126 is a wasteful number, since it uses less digits than its factorization.

23640126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940026.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 23640126 is about 4862.1112698086. Note that the first 3 decimals coincide. The cubic root of 23640126 is about 287.0009024402. Note that the first 3 decimals are identical.

Adding to 23640126 its reverse (62104632), we get a palindrome (85744758).

The spelling of 23640126 in words is "twenty-three million, six hundred forty thousand, one hundred twenty-six".