116840 has 32 divisors (see below), whose sum is σ = 276480. Its totient is φ = 44352.

The previous prime is 116833. The next prime is 116849. The reversal of 116840 is 48611.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (116849) 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 7 ways as a sum of consecutive naturals, for example, 857 + ... + 983.

It is an arithmetic number, because the mean of its divisors is an integer number (8640).

2¹¹⁶⁸⁴⁰ is an apocalyptic number.

116840 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 116840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138240).

116840 is an abundant number, since it is smaller than the sum of its proper divisors (159640).

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

116840 is a wasteful number, since it uses less digits than its factorization.

116840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 116840 is about 341.8186653768. The cubic root of 116840 is about 48.8874272596.

The spelling of 116840 in words is "one hundred sixteen thousand, eight hundred forty".