23988381 has 8 divisors (see below), whose sum is σ = 32176704. Its totient is φ = 15896160.

The previous prime is 23988373. The next prime is 23988407. The reversal of 23988381 is 18388932.

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

It is not a de Polignac number, because 23988381 - 2³ = 23988373 is a prime.

It is a super-2 number, since 2×23988381² = 1150884846002322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23988301) 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, 23440 + ... + 24441.

It is an arithmetic number, because the mean of its divisors is an integer number (4022088).

Almost surely, 2^23988381 is an apocalyptic number.

It is an amenable number.

23988381 is a deficient number, since it is larger than the sum of its proper divisors (8188323).

23988381 is a wasteful number, since it uses less digits than its factorization.

23988381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48051.

The product of its digits is 82944, while the sum is 42.

The square root of 23988381 is about 4897.7934827839. The cubic root of 23988381 is about 288.4033579428.

The spelling of 23988381 in words is "twenty-three million, nine hundred eighty-eight thousand, three hundred eighty-one".