23993814 has 32 divisors (see below), whose sum is σ = 53351424. Its totient is φ = 7143840.

The previous prime is 23993803. The next prime is 23993819. The reversal of 23993814 is 41839932.

It is a super-2 number, since 2×23993814² = 1151406220533192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23993819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2544 + ... + 7379.

It is an arithmetic number, because the mean of its divisors is an integer number (1667232).

Almost surely, 2^23993814 is an apocalyptic number.

23993814 is an abundant number, since it is smaller than the sum of its proper divisors (29357610).

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

23993814 is a wasteful number, since it uses less digits than its factorization.

23993814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9972.

The product of its digits is 46656, while the sum is 39.

The square root of 23993814 is about 4898.3480888969. The cubic root of 23993814 is about 288.4251292768.

The spelling of 23993814 in words is "twenty-three million, nine hundred ninety-three thousand, eight hundred fourteen".