23881887 has 6 divisors (see below), whose sum is σ = 34496072. Its totient is φ = 15921252.

The previous prime is 23881883. The next prime is 23881901. The reversal of 23881887 is 78818832.

It is a happy number.

It is not a de Polignac number, because 23881887 - 2² = 23881883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23881883) 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, 1326763 + ... + 1326780.

Almost surely, 2^23881887 is an apocalyptic number.

23881887 is a deficient number, since it is larger than the sum of its proper divisors (10614185).

23881887 is a wasteful number, since it uses less digits than its factorization.

23881887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653549 (or 2653546 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 23881887 is about 4886.9097597562. The cubic root of 23881887 is about 287.9759456183.

The spelling of 23881887 in words is "twenty-three million, eight hundred eighty-one thousand, eight hundred eighty-seven".