216223858 has 8 divisors (see below), whose sum is σ = 324577152. Its totient is φ = 108031476.

The previous prime is 216223841. The next prime is 216223871. The reversal of 216223858 is 858322612.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36810 + ... + 42277.

It is an arithmetic number, because the mean of its divisors is an integer number (40572144).

Almost surely, 2^216223858 is an apocalyptic number.

216223858 is a deficient number, since it is larger than the sum of its proper divisors (108353294).

216223858 is a wasteful number, since it uses less digits than its factorization.

216223858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80456.

The product of its digits is 46080, while the sum is 37.

The square root of 216223858 is about 14704.5522883221. The cubic root of 216223858 is about 600.2072043616.

The spelling of 216223858 in words is "two hundred sixteen million, two hundred twenty-three thousand, eight hundred fifty-eight".