118308240 has 120 divisors (see below), whose sum is σ = 408148728. Its totient is φ = 30689280.

The previous prime is 118308227. The next prime is 118308241. The reversal of 118308240 is 42803811.

118308240 is a `hidden beast` number, since 118 + 308 + 240 = 666.

118308240 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 26378496 + 91929744 = 5136^2 + 9588^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118308241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24420 + ... + 28860.

Almost surely, 2^118308240 is an apocalyptic number.

118308240 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 118308240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204074364).

118308240 is an abundant number, since it is smaller than the sum of its proper divisors (289840488).

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

118308240 is a wasteful number, since it uses less digits than its factorization.

118308240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497 (or 4488 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 118308240 is about 10876.9591338756. The cubic root of 118308240 is about 490.9135255866.

The spelling of 118308240 in words is "one hundred eighteen million, three hundred eight thousand, two hundred forty".