216471230 has 16 divisors (see below), whose sum is σ = 391498704. Its totient is φ = 86177280.

The previous prime is 216471209. The next prime is 216471247. The reversal of 216471230 is 32174612.

It is a self number, because there is not a number n which added to its sum of digits gives 216471230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49187 + ... + 53406.

It is an arithmetic number, because the mean of its divisors is an integer number (24468669).

Almost surely, 2^216471230 is an apocalyptic number.

216471230 is a deficient number, since it is larger than the sum of its proper divisors (175027474).

216471230 is a wasteful number, since it uses less digits than its factorization.

216471230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102811.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 216471230 is about 14712.9612926834. The cubic root of 216471230 is about 600.4360071603.

The spelling of 216471230 in words is "two hundred sixteen million, four hundred seventy-one thousand, two hundred thirty".