218052734 has 4 divisors (see below), whose sum is σ = 327079104. Its totient is φ = 109026366.

The previous prime is 218052733. The next prime is 218052739. The reversal of 218052734 is 437250812.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 218052734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218052733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54513182 + ... + 54513185.

It is an arithmetic number, because the mean of its divisors is an integer number (81769776).

Almost surely, 2^218052734 is an apocalyptic number.

218052734 is a deficient number, since it is larger than the sum of its proper divisors (109026370).

218052734 is a wasteful number, since it uses less digits than its factorization.

218052734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109026369.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 218052734 is about 14766.6087508270. The cubic root of 218052734 is about 601.8946902466.

The spelling of 218052734 in words is "two hundred eighteen million, fifty-two thousand, seven hundred thirty-four".