18094216 has 32 divisors (see below), whose sum is σ = 39162240. Its totient is φ = 7676928.

The previous prime is 18094211. The next prime is 18094229. The reversal of 18094216 is 61249081.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18094211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4200 + ... + 7336.

It is an arithmetic number, because the mean of its divisors is an integer number (1223820).

Almost surely, 2^18094216 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 18094216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19581120).

18094216 is an abundant number, since it is smaller than the sum of its proper divisors (21068024).

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

18094216 is a wasteful number, since it uses less digits than its factorization.

18094216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3249 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18094216 is about 4253.7296576064. The cubic root of 18094216 is about 262.5305953757.

The spelling of 18094216 in words is "eighteen million, ninety-four thousand, two hundred sixteen".