118440 has 96 divisors (see below), whose sum is σ = 449280. Its totient is φ = 26496.

The previous prime is 118429. The next prime is 118453. The reversal of 118440 is 44811.

118440 = T₃₅ + T₃₆ + ... + T₉₀.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

118440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2497 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (4680).

118440 is a Friedman number, since it can be written as 1410*84, using all its digits and the basic arithmetic operations.

It is a vampire number, since it can be written as 141 ⋅ 840 (with its own digits).

2¹¹⁸⁴⁴⁰ is an apocalyptic number.

118440 is a gapful number since it is divisible by the number (10) 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 118440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224640).

118440 is an abundant number, since it is smaller than the sum of its proper divisors (330840).

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

118440 is a wasteful number, since it uses less digits than its factorization.

118440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 118440 is about 344.1511295928. The cubic root of 118440 is about 49.1095701594.

The spelling of 118440 in words is "one hundred eighteen thousand, four hundred forty".