118138880 has 96 divisors (see below), whose sum is σ = 288943200. Its totient is φ = 46350336.

The previous prime is 118138859. The next prime is 118138897. The reversal of 118138880 is 88831811.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849851 + ... + 849989.

It is an arithmetic number, because the mean of its divisors is an integer number (3009825).

Almost surely, 2^118138880 is an apocalyptic number.

118138880 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 118138880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144471600).

118138880 is an abundant number, since it is smaller than the sum of its proper divisors (170804320).

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

118138880 is an equidigital number, since it uses as much as digits as its factorization.

118138880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 38.

The square root of 118138880 is about 10869.1710815499. The cubic root of 118138880 is about 490.6791637229.

The spelling of 118138880 in words is "one hundred eighteen million, one hundred thirty-eight thousand, eight hundred eighty".