118128780 has 240 divisors, whose sum is σ = 462502656. Its totient is φ = 24520320.

The previous prime is 118128737. The next prime is 118128793. The reversal of 118128780 is 87821811.

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 79 ways as a sum of consecutive naturals, for example, 124267 + ... + 125213.

Almost surely, 2^118128780 is an apocalyptic number.

118128780 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 118128780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231251328).

118128780 is an abundant number, since it is smaller than the sum of its proper divisors (344373876).

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

118128780 is a wasteful number, since it uses less digits than its factorization.

118128780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 118128780 is about 10868.7064547719. The cubic root of 118128780 is about 490.6651801786.

The spelling of 118128780 in words is "one hundred eighteen million, one hundred twenty-eight thousand, seven hundred eighty".