118638240 has 384 divisors, whose sum is σ = 473776128. Its totient is φ = 24330240.

The previous prime is 118638227. The next prime is 118638251. The reversal of 118638240 is 42836811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1770687 + ... + 1770753.

It is an arithmetic number, because the mean of its divisors is an integer number (1233792).

Almost surely, 2^118638240 is an apocalyptic number.

118638240 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 118638240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236888064).

118638240 is an abundant number, since it is smaller than the sum of its proper divisors (355137888).

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

118638240 is a wasteful number, since it uses less digits than its factorization.

118638240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 118638240 is about 10892.1182512861. The cubic root of 118638240 is about 491.3695407990.

The spelling of 118638240 in words is "one hundred eighteen million, six hundred thirty-eight thousand, two hundred forty".