18107136 has 108 divisors (see below), whose sum is σ = 54206880. Its totient is φ = 5806080.

The previous prime is 18107119. The next prime is 18107143. The reversal of 18107136 is 63170181.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 66681 + ... + 66951.

Almost surely, 2^18107136 is an apocalyptic number.

18107136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18107136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27103440).

18107136 is an abundant number, since it is smaller than the sum of its proper divisors (36099744).

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

18107136 is a wasteful number, since it uses less digits than its factorization.

18107136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 18107136 is about 4255.2480538742. The cubic root of 18107136 is about 262.5930663202.

The spelling of 18107136 in words is "eighteen million, one hundred seven thousand, one hundred thirty-six".