23878559 has 4 divisors (see below), whose sum is σ = 23969616. Its totient is φ = 23787504.

The previous prime is 23878553. The next prime is 23878583. The reversal of 23878559 is 95587832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23878559 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 (23878553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45134 + ... + 45659.

It is an arithmetic number, because the mean of its divisors is an integer number (5992404).

Almost surely, 2^23878559 is an apocalyptic number.

23878559 is a deficient number, since it is larger than the sum of its proper divisors (91057).

23878559 is an equidigital number, since it uses as much as digits as its factorization.

23878559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91056.

The product of its digits is 604800, while the sum is 47.

The square root of 23878559 is about 4886.5692464141. The cubic root of 23878559 is about 287.9625682769.

The spelling of 23878559 in words is "twenty-three million, eight hundred seventy-eight thousand, five hundred fifty-nine".