23864381 has 8 divisors (see below), whose sum is σ = 24216024. Its totient is φ = 23515200.

The previous prime is 23864369. The next prime is 23864387. The reversal of 23864381 is 18346832.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1301881 + 22562500 = 1141^2 + 4750^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23864381 - 2¹⁴ = 23847997 is a prime.

It is a super-2 number, since 2×23864381² = 1139017361026322, 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 (23864387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27551 + ... + 28403.

It is an arithmetic number, because the mean of its divisors is an integer number (3027003).

Almost surely, 2^23864381 is an apocalyptic number.

It is an amenable number.

23864381 is a deficient number, since it is larger than the sum of its proper divisors (351643).

23864381 is a wasteful number, since it uses less digits than its factorization.

23864381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its digits is 27648, while the sum is 35.

The square root of 23864381 is about 4885.1183199591. The cubic root of 23864381 is about 287.9055639771.

The spelling of 23864381 in words is "twenty-three million, eight hundred sixty-four thousand, three hundred eighty-one".