23001664 has 28 divisors (see below), whose sum is σ = 52165504. Its totient is φ = 9857664.

The previous prime is 23001653. The next prime is 23001677. The reversal of 23001664 is 46610032.

It is a tau number, because it is divible by the number of its divisors (28).

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 3 ways as a sum of consecutive naturals, for example, 25224 + ... + 26119.

Almost surely, 2^23001664 is an apocalyptic number.

It is an amenable number.

23001664 is an abundant number, since it is smaller than the sum of its proper divisors (29163840).

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

23001664 is an equidigital number, since it uses as much as digits as its factorization.

23001664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51362 (or 51352 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23001664 is about 4796.0050041675. The cubic root of 23001664 is about 284.3935560729.

Adding to 23001664 its reverse (46610032), we get a palindrome (69611696).

The spelling of 23001664 in words is "twenty-three million, one thousand, six hundred sixty-four".