23640270 has 16 divisors (see below), whose sum is σ = 56736720. Its totient is φ = 6304064.

The previous prime is 23640257. The next prime is 23640293. The reversal of 23640270 is 7204632.

It is a self number, because there is not a number n which added to its sum of digits gives 23640270.

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 7 ways as a sum of consecutive naturals, for example, 393975 + ... + 394034.

It is an arithmetic number, because the mean of its divisors is an integer number (3546045).

Almost surely, 2^23640270 is an apocalyptic number.

23640270 is an abundant number, since it is smaller than the sum of its proper divisors (33096450).

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

23640270 is a wasteful number, since it uses less digits than its factorization.

23640270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788019.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 23640270 is about 4862.1260781679. The cubic root of 23640270 is about 287.0014851789.

The spelling of 23640270 in words is "twenty-three million, six hundred forty thousand, two hundred seventy".