218030834 has 16 divisors (see below), whose sum is σ = 374269248. Its totient is φ = 93316272.

The previous prime is 218030819. The next prime is 218030851. The reversal of 218030834 is 438030812.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 218030797 and 218030806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (23391828).

Almost surely, 2^218030834 is an apocalyptic number.

218030834 is a deficient number, since it is larger than the sum of its proper divisors (156238414).

218030834 is a wasteful number, since it uses less digits than its factorization.

218030834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20929.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 218030834 is about 14765.8671943100. The cubic root of 218030834 is about 601.8745392571.

The spelling of 218030834 in words is "two hundred eighteen million, thirty thousand, eight hundred thirty-four".