118217712 has 20 divisors (see below), whose sum is σ = 305395880. Its totient is φ = 39405888.

The previous prime is 118217689. The next prime is 118217747. The reversal of 118217712 is 217712811.

It is a self number, because there is not a number n which added to its sum of digits gives 118217712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231387 + ... + 1231482.

It is an arithmetic number, because the mean of its divisors is an integer number (15269794).

Almost surely, 2^118217712 is an apocalyptic number.

118217712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

118217712 is an abundant number, since it is smaller than the sum of its proper divisors (187178168).

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

118217712 is a wasteful number, since it uses less digits than its factorization.

118217712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462880 (or 2462874 counting only the distinct ones).

The product of its digits is 1568, while the sum is 30.

The square root of 118217712 is about 10872.7968802880. The cubic root of 118217712 is about 490.7882799857.

The spelling of 118217712 in words is "one hundred eighteen million, two hundred seventeen thousand, seven hundred twelve".