23857855 has 12 divisors (see below), whose sum is σ = 33303960. Its totient is φ = 16359504.

The previous prime is 23857853. The next prime is 23857861. The reversal of 23857855 is 55875832.

It is not a de Polignac number, because 23857855 - 2¹ = 23857853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23857853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48445 + ... + 48934.

It is an arithmetic number, because the mean of its divisors is an integer number (2775330).

Almost surely, 2^23857855 is an apocalyptic number.

23857855 is a deficient number, since it is larger than the sum of its proper divisors (9446105).

23857855 is an equidigital number, since it uses as much as digits as its factorization.

23857855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97398 (or 97391 counting only the distinct ones).

The product of its digits is 336000, while the sum is 43.

The square root of 23857855 is about 4884.4503273142. The cubic root of 23857855 is about 287.8793178462.

The spelling of 23857855 in words is "twenty-three million, eight hundred fifty-seven thousand, eight hundred fifty-five".