216123446 has 16 divisors (see below), whose sum is σ = 404179200. Its totient is φ = 84203880.

The previous prime is 216123443. The next prime is 216123463. The reversal of 216123446 is 644321612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216123443) by changing a digit.

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, 701546 + ... + 701853.

It is an arithmetic number, because the mean of its divisors is an integer number (25261200).

Almost surely, 2^216123446 is an apocalyptic number.

216123446 is a deficient number, since it is larger than the sum of its proper divisors (188055754).

216123446 is a wasteful number, since it uses less digits than its factorization.

216123446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403419.

The product of its digits is 6912, while the sum is 29.

The square root of 216123446 is about 14701.1375750314. The cubic root of 216123446 is about 600.1142800839.

The spelling of 216123446 in words is "two hundred sixteen million, one hundred twenty-three thousand, four hundred forty-six".