118821136 has 40 divisors (see below), whose sum is σ = 276956480. Its totient is φ = 48242304.

The previous prime is 118821133. The next prime is 118821137. The reversal of 118821136 is 631128811.

It is a junction number, because it is equal to n+sod(n) for n = 118821098 and 118821107.

It is not an unprimeable number, because it can be changed into a prime (118821133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25791 + ... + 30046.

It is an arithmetic number, because the mean of its divisors is an integer number (6923912).

Almost surely, 2^118821136 is an apocalyptic number.

118821136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

118821136 is an abundant number, since it is smaller than the sum of its proper divisors (158135344).

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

118821136 is a wasteful number, since it uses less digits than its factorization.

118821136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55871 (or 55865 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 118821136 is about 10900.5108137188. The cubic root of 118821136 is about 491.6219141238.

Adding to 118821136 its reverse (631128811), we get a palindrome (749949947).

The spelling of 118821136 in words is "one hundred eighteen million, eight hundred twenty-one thousand, one hundred thirty-six".