23991382 has 4 divisors (see below), whose sum is σ = 35987076. Its totient is φ = 11995690.

The previous prime is 23991379. The next prime is 23991389. The reversal of 23991382 is 28319932.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23991389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5997844 + ... + 5997847.

It is an arithmetic number, because the mean of its divisors is an integer number (8996769).

Almost surely, 2^23991382 is an apocalyptic number.

23991382 is a deficient number, since it is larger than the sum of its proper divisors (11995694).

23991382 is a wasteful number, since it uses less digits than its factorization.

23991382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995693.

The product of its digits is 23328, while the sum is 37.

The square root of 23991382 is about 4898.0998356506. The cubic root of 23991382 is about 288.4153840759.

The spelling of 23991382 in words is "twenty-three million, nine hundred ninety-one thousand, three hundred eighty-two".