18056108 has 36 divisors (see below), whose sum is σ = 38926440. Its totient is φ = 7281792.

The previous prime is 18056107. The next prime is 18056147. The reversal of 18056108 is 80165081.

It is a super-2 number, since 2×18056108² = 652046072215328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18056107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623 + ... + 6041.

It is an arithmetic number, because the mean of its divisors is an integer number (1081290).

Almost surely, 2^18056108 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 18056108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19463220).

18056108 is an abundant number, since it is smaller than the sum of its proper divisors (20870332).

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

18056108 is a wasteful number, since it uses less digits than its factorization.

18056108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 18056108 is about 4249.2479334583. The cubic root of 18056108 is about 262.3461617124.

The spelling of 18056108 in words is "eighteen million, fifty-six thousand, one hundred eight".