216383056 has 20 divisors (see below), whose sum is σ = 419476500. Its totient is φ = 108131072.

The previous prime is 216383017. The next prime is 216383059. The reversal of 216383056 is 650383612.

It can be written as a sum of positive squares in 2 ways, for example, as 202094656 + 14288400 = 14216^2 + 3780^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216383059) 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, 44220 + ... + 48868.

It is an arithmetic number, because the mean of its divisors is an integer number (20973825).

Almost surely, 2^216383056 is an apocalyptic number.

It is an amenable number.

216383056 is a deficient number, since it is larger than the sum of its proper divisors (203093444).

216383056 is a wasteful number, since it uses less digits than its factorization.

216383056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7566 (or 7560 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 216383056 is about 14709.9645138933. The cubic root of 216383056 is about 600.3544720229.

The spelling of 216383056 in words is "two hundred sixteen million, three hundred eighty-three thousand, fifty-six".