118881 has 32 divisors (see below), whose sum is σ = 218880. Its totient is φ = 62208.

The previous prime is 118873. The next prime is 118891. The reversal of 118881 is 188811.

It is not a de Polignac number, because 118881 - 2³ = 118873 is a prime.

It is a super-2 number, since 2×118881² = 28265384322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (512) is a multiple of the sum of its prime divisors (64).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118801) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3195 + ... + 3231.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2¹¹⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

118881 is a deficient number, since it is larger than the sum of its proper divisors (99999).

118881 is a wasteful number, since it uses less digits than its factorization.

118881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 64 counting only the distinct ones).

The product of its digits is 512, while the sum is 27.

The square root of 118881 is about 344.7912411881. The cubic root of 118881 is about 49.1704462606.

It can be divided in two parts, 118 and 881, that added together give a palindrome (999).

The spelling of 118881 in words is "one hundred eighteen thousand, eight hundred eighty-one".