23640718 has 12 divisors (see below), whose sum is σ = 36238392. Its totient is φ = 11566700.

The previous prime is 23640691. The next prime is 23640737. The reversal of 23640718 is 81704632.

It is a self number, because there is not a number n which added to its sum of digits gives 23640718.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1743 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (3019866).

Almost surely, 2^23640718 is an apocalyptic number.

23640718 is a deficient number, since it is larger than the sum of its proper divisors (12597674).

23640718 is an equidigital number, since it uses as much as digits as its factorization.

23640718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5400 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 23640718 is about 4862.1721483304. The cubic root of 23640718 is about 287.0032981285.

The spelling of 23640718 in words is "twenty-three million, six hundred forty thousand, seven hundred eighteen".