118978236 has 72 divisors (see below), whose sum is σ = 332687264. Its totient is φ = 35614080.

The previous prime is 118978231. The next prime is 118978289. The reversal of 118978236 is 632879811.

It is a junction number, because it is equal to n+sod(n) for n = 118978191 and 118978200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118978231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13881 + ... + 20751.

Almost surely, 2^118978236 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 118978236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166343632).

118978236 is an abundant number, since it is smaller than the sum of its proper divisors (213709028).

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

118978236 is a wasteful number, since it uses less digits than its factorization.

118978236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931 (or 6926 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 118978236 is about 10907.7145177163. The cubic root of 118978236 is about 491.8384855519.

The spelling of 118978236 in words is "one hundred eighteen million, nine hundred seventy-eight thousand, two hundred thirty-six".