118438284 has 12 divisors (see below), whose sum is σ = 276356024. Its totient is φ = 39479424.

The previous prime is 118438277. The next prime is 118438289. The reversal of 118438284 is 482834811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (118438289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4934917 + ... + 4934940.

Almost surely, 2^118438284 is an apocalyptic number.

It is an amenable number.

118438284 is an abundant number, since it is smaller than the sum of its proper divisors (157917740).

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

118438284 is a wasteful number, since it uses less digits than its factorization.

118438284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9869864 (or 9869862 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 118438284 is about 10882.9354495926. The cubic root of 118438284 is about 491.0933298610.

The spelling of 118438284 in words is "one hundred eighteen million, four hundred thirty-eight thousand, two hundred eighty-four".