23971864 has 48 divisors (see below), whose sum is σ = 53305200. Its totient is φ = 9899904.

The previous prime is 23971861. The next prime is 23971867. The reversal of 23971864 is 46817932.

It is an interprime number because it is at equal distance from previous prime (23971861) and next prime (23971867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23971861) 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 11 ways as a sum of consecutive naturals, for example, 46842 + ... + 47350.

It is an arithmetic number, because the mean of its divisors is an integer number (1110525).

Almost surely, 2^23971864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23971864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26652600).

23971864 is an abundant number, since it is smaller than the sum of its proper divisors (29333336).

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

23971864 is a wasteful number, since it uses less digits than its factorization.

23971864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 547 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 23971864 is about 4896.1070249740. The cubic root of 23971864 is about 288.3371501680.

The spelling of 23971864 in words is "twenty-three million, nine hundred seventy-one thousand, eight hundred sixty-four".