18706116 has 72 divisors (see below), whose sum is σ = 51718912. Its totient is φ = 5227200.

The previous prime is 18706111. The next prime is 18706123. The reversal of 18706116 is 61160781.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18706111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18381 + ... + 19371.

Almost surely, 2^18706116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18706116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25859456).

18706116 is an abundant number, since it is smaller than the sum of its proper divisors (33012796).

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

18706116 is a wasteful number, since it uses less digits than its factorization.

18706116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 18706116 is about 4325.0567626333. The cubic root of 18706116 is about 265.4572194611.

Adding to 18706116 its reverse (61160781), we get a palindrome (79866897).

The spelling of 18706116 in words is "eighteen million, seven hundred six thousand, one hundred sixteen".