23987887 has 24 divisors (see below), whose sum is σ = 30507008. Its totient is φ = 18461520.

The previous prime is 23987869. The next prime is 23987891. The reversal of 23987887 is 78878932.

It is not a de Polignac number, because 23987887 - 2⁷ = 23987759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23987837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107458 + ... + 107680.

Almost surely, 2^23987887 is an apocalyptic number.

23987887 is a deficient number, since it is larger than the sum of its proper divisors (6519121).

23987887 is a wasteful number, since it uses less digits than its factorization.

23987887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 368 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 23987887 is about 4897.7430516514. The cubic root of 23987887 is about 288.4013782033.

The spelling of 23987887 in words is "twenty-three million, nine hundred eighty-seven thousand, eight hundred eighty-seven".