23640364 has 12 divisors (see below), whose sum is σ = 45131688. Its totient is φ = 10745600.

The previous prime is 23640359. The next prime is 23640371. The reversal of 23640364 is 46304632.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268597 + ... + 268684.

It is an arithmetic number, because the mean of its divisors is an integer number (3760974).

Almost surely, 2^23640364 is an apocalyptic number.

It is an amenable number.

23640364 is a deficient number, since it is larger than the sum of its proper divisors (21491324).

23640364 is a wasteful number, since it uses less digits than its factorization.

23640364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537296 (or 537294 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 23640364 is about 4862.1357447114. The cubic root of 23640364 is about 287.0018655765.

Adding to 23640364 its reverse (46304632), we get a palindrome (69944996).

The spelling of 23640364 in words is "twenty-three million, six hundred forty thousand, three hundred sixty-four".