216334506 has 8 divisors (see below), whose sum is σ = 432669024. Its totient is φ = 72111500.

The previous prime is 216334493. The next prime is 216334549. The reversal of 216334506 is 605433612.

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

216334506 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18027870 + ... + 18027881.

It is an arithmetic number, because the mean of its divisors is an integer number (54083628).

Almost surely, 2^216334506 is an apocalyptic number.

216334506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216334506 is a wasteful number, since it uses less digits than its factorization.

216334506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36055756.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 216334506 is about 14708.3141794021. The cubic root of 216334506 is about 600.3095680297.

The spelling of 216334506 in words is "two hundred sixteen million, three hundred thirty-four thousand, five hundred six".