23287864 has 16 divisors (see below), whose sum is σ = 43795800. Its totient is φ = 11608992.

The previous prime is 23287813. The next prime is 23287867. The reversal of 23287864 is 46878232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23287867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419 + ... + 6970.

Almost surely, 2^23287864 is an apocalyptic number.

It is an amenable number.

23287864 is a deficient number, since it is larger than the sum of its proper divisors (20507936).

23287864 is a wasteful number, since it uses less digits than its factorization.

23287864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742 (or 8738 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 23287864 is about 4825.7500971352. The cubic root of 23287864 is about 285.5682271564.

The spelling of 23287864 in words is "twenty-three million, two hundred eighty-seven thousand, eight hundred sixty-four".