118613880 has 288 divisors, whose sum is σ = 485503200. Its totient is φ = 24583680.

The previous prime is 118613867. The next prime is 118613899. The reversal of 118613880 is 88316811.

It is a Cunningham number, because it is equal to 10891²-1.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 304726 + ... + 305114.

It is an arithmetic number, because the mean of its divisors is an integer number (1685775).

Almost surely, 2^118613880 is an apocalyptic number.

118613880 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 118613880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242751600).

118613880 is an abundant number, since it is smaller than the sum of its proper divisors (366889320).

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

118613880 is a wasteful number, since it uses less digits than its factorization.

118613880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 118613880 is about 10890.9999540905. Note that the first 4 decimals coincide. The cubic root of 118613880 is about 491.3359075136.

The spelling of 118613880 in words is "one hundred eighteen million, six hundred thirteen thousand, eight hundred eighty".