218140068 has 24 divisors (see below), whose sum is σ = 514715040. Its totient is φ = 71896000.

The previous prime is 218140061. The next prime is 218140127. The reversal of 218140068 is 860041812.

It is not an unprimeable number, because it can be changed into a prime (218140061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101058 + ... + 103193.

It is an arithmetic number, because the mean of its divisors is an integer number (21446460).

Almost surely, 2^218140068 is an apocalyptic number.

It is an amenable number.

218140068 is an abundant number, since it is smaller than the sum of its proper divisors (296574972).

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

218140068 is a wasteful number, since it uses less digits than its factorization.

218140068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204347 (or 204345 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 218140068 is about 14769.5655995699. The cubic root of 218140068 is about 601.9750360321.

The spelling of 218140068 in words is "two hundred eighteen million, one hundred forty thousand, sixty-eight".