118320136 has 64 divisors (see below), whose sum is σ = 258552000. Its totient is φ = 50165760.

The previous prime is 118320121. The next prime is 118320143. The reversal of 118320136 is 631023811.

It is a self number, because there is not a number n which added to its sum of digits gives 118320136.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 207660 + ... + 208228.

It is an arithmetic number, because the mean of its divisors is an integer number (4039875).

Almost surely, 2^118320136 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 118320136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129276000).

118320136 is an abundant number, since it is smaller than the sum of its proper divisors (140231864).

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

118320136 is a wasteful number, since it uses less digits than its factorization.

118320136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 118320136 is about 10877.5059641445. The cubic root of 118320136 is about 490.9299789674.

Adding to 118320136 its reverse (631023811), we get a palindrome (749343947).

The spelling of 118320136 in words is "one hundred eighteen million, three hundred twenty thousand, one hundred thirty-six".