218271434 has 8 divisors (see below), whose sum is σ = 337968768. Its totient is φ = 105615180.

The previous prime is 218271433. The next prime is 218271451. The reversal of 218271434 is 434172812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 218271434.

It is not an unprimeable number, because it can be changed into a prime (218271433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760192 + ... + 1760315.

It is an arithmetic number, because the mean of its divisors is an integer number (42246096).

Almost surely, 2^218271434 is an apocalyptic number.

218271434 is a deficient number, since it is larger than the sum of its proper divisors (119697334).

218271434 is a wasteful number, since it uses less digits than its factorization.

218271434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520540.

The product of its digits is 10752, while the sum is 32.

The square root of 218271434 is about 14774.0121158743. The cubic root of 218271434 is about 602.0958501258.

The spelling of 218271434 in words is "two hundred eighteen million, two hundred seventy-one thousand, four hundred thirty-four".