23861855 has 8 divisors (see below), whose sum is σ = 29408352. Its totient is φ = 18573408.

The previous prime is 23861843. The next prime is 23861857. The reversal of 23861855 is 55816832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23861855 - 2²⁰ = 22813279 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 (23861857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64307 + ... + 64676.

It is an arithmetic number, because the mean of its divisors is an integer number (3676044).

Almost surely, 2^23861855 is an apocalyptic number.

23861855 is a deficient number, since it is larger than the sum of its proper divisors (5546497).

23861855 is a wasteful number, since it uses less digits than its factorization.

23861855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129025.

The product of its digits is 57600, while the sum is 38.

The square root of 23861855 is about 4884.8597728082. The cubic root of 23861855 is about 287.8954055306.

The spelling of 23861855 in words is "twenty-three million, eight hundred sixty-one thousand, eight hundred fifty-five".