23993864 has 8 divisors (see below), whose sum is σ = 44988510. Its totient is φ = 11996928.

The previous prime is 23993833. The next prime is 23993867. The reversal of 23993864 is 46839932.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 3833764 = 4490^2 + 1958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (23993867) 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 as a sum of consecutive naturals, namely, 1499609 + ... + 1499624.

Almost surely, 2^23993864 is an apocalyptic number.

It is an amenable number.

23993864 is a deficient number, since it is larger than the sum of its proper divisors (20994646).

23993864 is a wasteful number, since it uses less digits than its factorization.

23993864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999239 (or 2999235 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 23993864 is about 4898.3531926557. The cubic root of 23993864 is about 288.4253296235.

The spelling of 23993864 in words is "twenty-three million, nine hundred ninety-three thousand, eight hundred sixty-four".