118438540 has 24 divisors (see below), whose sum is σ = 271332432. Its totient is φ = 43068480.

The previous prime is 118438519. The next prime is 118438553. The reversal of 118438540 is 45834811.

It is a junction number, because it is equal to n+sod(n) for n = 118438496 and 118438505.

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, 268959 + ... + 269398.

It is an arithmetic number, because the mean of its divisors is an integer number (11305518).

Almost surely, 2^118438540 is an apocalyptic number.

118438540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118438540 is an abundant number, since it is smaller than the sum of its proper divisors (152893892).

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

118438540 is a wasteful number, since it uses less digits than its factorization.

118438540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538377 (or 538375 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 118438540 is about 10882.9472111189. The cubic root of 118438540 is about 491.0936836875.

The spelling of 118438540 in words is "one hundred eighteen million, four hundred thirty-eight thousand, five hundred forty".