218327442 has 16 divisors (see below), whose sum is σ = 459636960. Its totient is φ = 68945472.

The previous prime is 218327441. The next prime is 218327453. The reversal of 218327442 is 244723812.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (218327441) 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, 957463 + ... + 957690.

It is an arithmetic number, because the mean of its divisors is an integer number (28727310).

Almost surely, 2^218327442 is an apocalyptic number.

218327442 is an abundant number, since it is smaller than the sum of its proper divisors (241309518).

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

218327442 is a wasteful number, since it uses less digits than its factorization.

218327442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915177.

The product of its digits is 21504, while the sum is 33.

The square root of 218327442 is about 14775.9074848214. The cubic root of 218327442 is about 602.1473445729.

The spelling of 218327442 in words is "two hundred eighteen million, three hundred twenty-seven thousand, four hundred forty-two".