23984381 has 4 divisors (see below), whose sum is σ = 24145500. Its totient is φ = 23823264.

The previous prime is 23984357. The next prime is 23984383. The reversal of 23984381 is 18348932.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 20340100 = 1909^2 + 4510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23984381 is a prime.

It is a super-2 number, since 2×23984381² = 1150501063906322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23984383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80336 + ... + 80633.

It is an arithmetic number, because the mean of its divisors is an integer number (6036375).

Almost surely, 2^23984381 is an apocalyptic number.

It is an amenable number.

23984381 is a deficient number, since it is larger than the sum of its proper divisors (161119).

23984381 is a wasteful number, since it uses less digits than its factorization.

23984381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161118.

The product of its digits is 41472, while the sum is 38.

The square root of 23984381 is about 4897.3851186118. The cubic root of 23984381 is about 288.3873268823.

The spelling of 23984381 in words is "twenty-three million, nine hundred eighty-four thousand, three hundred eighty-one".