23871864 has 32 divisors (see below), whose sum is σ = 60952320. Its totient is φ = 7787616.

The previous prime is 23871863. The next prime is 23871937. The reversal of 23871864 is 46817832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23871863) 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 7 ways as a sum of consecutive naturals, for example, 9454 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (1904760).

Almost surely, 2^23871864 is an apocalyptic number.

23871864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23871864 is an abundant number, since it is smaller than the sum of its proper divisors (37080456).

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

23871864 is a wasteful number, since it uses less digits than its factorization.

23871864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21219 (or 21215 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 23871864 is about 4885.8841574479. The cubic root of 23871864 is about 287.9356530625.

The spelling of 23871864 in words is "twenty-three million, eight hundred seventy-one thousand, eight hundred sixty-four".