216680244 has 48 divisors (see below), whose sum is σ = 565016256. Its totient is φ = 64057600.

The previous prime is 216680221. The next prime is 216680287. The reversal of 216680244 is 442086612.

216680244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14607 + ... + 25430.

It is an arithmetic number, because the mean of its divisors is an integer number (11771172).

Almost surely, 2^216680244 is an apocalyptic number.

It is an amenable number.

216680244 is an abundant number, since it is smaller than the sum of its proper divisors (348336012).

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

216680244 is a wasteful number, since it uses less digits than its factorization.

216680244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40096 (or 40094 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 216680244 is about 14720.0626357363. The cubic root of 216680244 is about 600.6291955133.

The spelling of 216680244 in words is "two hundred sixteen million, six hundred eighty thousand, two hundred forty-four".