23968881 has 6 divisors (see below), whose sum is σ = 34621730. Its totient is φ = 15979248.

The previous prime is 23968873. The next prime is 23968897. The reversal of 23968881 is 18886932.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 349281 = 4860^2 + 591^2 .

It is not a de Polignac number, because 23968881 - 2³ = 23968873 is a prime.

It is a super-2 number, since 2×23968881² = 1149014512784322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23968811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1331596 + ... + 1331613.

Almost surely, 2^23968881 is an apocalyptic number.

It is an amenable number.

23968881 is a deficient number, since it is larger than the sum of its proper divisors (10652849).

23968881 is a wasteful number, since it uses less digits than its factorization.

23968881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663215 (or 2663212 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 23968881 is about 4895.8023857178. The cubic root of 23968881 is about 288.3251896824.

The spelling of 23968881 in words is "twenty-three million, nine hundred sixty-eight thousand, eight hundred eighty-one".