216047806 has 16 divisors (see below), whose sum is σ = 349547184. Its totient is φ = 99558144.

The previous prime is 216047789. The next prime is 216047831. The reversal of 216047806 is 608740612.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11325 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (21846699).

Almost surely, 2^216047806 is an apocalyptic number.

216047806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216047806 is a deficient number, since it is larger than the sum of its proper divisors (133499378).

216047806 is a wasteful number, since it uses less digits than its factorization.

216047806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13035.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 216047806 is about 14698.5647598669. The cubic root of 216047806 is about 600.0442615496.

The spelling of 216047806 in words is "two hundred sixteen million, forty-seven thousand, eight hundred six".