18105714 has 96 divisors (see below), whose sum is σ = 47113920. Its totient is φ = 5132160.

The previous prime is 18105713. The next prime is 18105749. The reversal of 18105714 is 41750181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18105713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110997 + ... + 111159.

It is an arithmetic number, because the mean of its divisors is an integer number (490770).

Almost surely, 2^18105714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18105714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23556960).

18105714 is an abundant number, since it is smaller than the sum of its proper divisors (29008206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18105714 is a wasteful number, since it uses less digits than its factorization.

18105714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 18105714 is about 4255.0809628020. The cubic root of 18105714 is about 262.5861921038.

Adding to 18105714 its reverse (41750181), we get a palindrome (59855895).

The spelling of 18105714 in words is "eighteen million, one hundred five thousand, seven hundred fourteen".