118031680 has 112 divisors (see below), whose sum is σ = 320680080. Its totient is φ = 40992768.

The previous prime is 118031677. The next prime is 118031681. The reversal of 118031680 is 86130811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1218816 + 116812864 = 1104^2 + 10808^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118031681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69886 + ... + 71554.

It is an arithmetic number, because the mean of its divisors is an integer number (2863215).

Almost surely, 2^118031680 is an apocalyptic number.

118031680 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 118031680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160340040).

118031680 is an abundant number, since it is smaller than the sum of its proper divisors (202648400).

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

118031680 is a wasteful number, since it uses less digits than its factorization.

118031680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 118031680 is about 10864.2385835364. The cubic root of 118031680 is about 490.5307036379.

The spelling of 118031680 in words is "one hundred eighteen million, thirty-one thousand, six hundred eighty".