118385280 has 512 divisors, whose sum is σ = 493516800. Its totient is φ = 26542080.

The previous prime is 118385273. The next prime is 118385287. The reversal of 118385280 is 82583811.

It is an interprime number because it is at equal distance from previous prime (118385273) and next prime (118385287).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118385287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3818865 + ... + 3818895.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^118385280 is an apocalyptic number.

118385280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 10880×10881.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246758400).

118385280 is an abundant number, since it is smaller than the sum of its proper divisors (375131520).

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

118385280 is a wasteful number, since it uses less digits than its factorization.

118385280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 118385280 is about 10880.4999885116. The cubic root of 118385280 is about 491.0200602111.

The spelling of 118385280 in words is "one hundred eighteen million, three hundred eighty-five thousand, two hundred eighty".