218730014 has 16 divisors (see below), whose sum is σ = 354699600. Its totient is φ = 100808064.

The previous prime is 218730013. The next prime is 218730059. The reversal of 218730014 is 410037812.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218730013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76379 + ... + 79190.

It is an arithmetic number, because the mean of its divisors is an integer number (22168725).

Almost surely, 2^218730014 is an apocalyptic number.

218730014 is a deficient number, since it is larger than the sum of its proper divisors (135969586).

218730014 is a wasteful number, since it uses less digits than its factorization.

218730014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155627.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 218730014 is about 14789.5237921983. The cubic root of 218730014 is about 602.5172153503.

Adding to 218730014 its reverse (410037812), we get a palindrome (628767826).

The spelling of 218730014 in words is "two hundred eighteen million, seven hundred thirty thousand, fourteen".