216443446 has 8 divisors (see below), whose sum is σ = 325118880. Its totient is φ = 108070488.

The previous prime is 216443431. The next prime is 216443449. The reversal of 216443446 is 644344612.

216443446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216443449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73821 + ... + 76696.

It is an arithmetic number, because the mean of its divisors is an integer number (40639860).

Almost surely, 2^216443446 is an apocalyptic number.

216443446 is a deficient number, since it is larger than the sum of its proper divisors (108675434).

216443446 is a wasteful number, since it uses less digits than its factorization.

216443446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151238.

The product of its digits is 55296, while the sum is 34.

The square root of 216443446 is about 14712.0170608928. The cubic root of 216443446 is about 600.4103174835.

The spelling of 216443446 in words is "two hundred sixteen million, four hundred forty-three thousand, four hundred forty-six".