216361244 has 24 divisors (see below), whose sum is σ = 437352048. Its totient is φ = 92560640.

The previous prime is 216361241. The next prime is 216361259. The reversal of 216361244 is 442163612.

216361244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216361241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143879 + ... + 145374.

It is an arithmetic number, because the mean of its divisors is an integer number (18223002).

Almost surely, 2^216361244 is an apocalyptic number.

It is an amenable number.

216361244 is an abundant number, since it is smaller than the sum of its proper divisors (220990804).

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

216361244 is a wasteful number, since it uses less digits than its factorization.

216361244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289285 (or 289283 counting only the distinct ones).

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

The square root of 216361244 is about 14709.2230930121. The cubic root of 216361244 is about 600.3342988910.

The spelling of 216361244 in words is "two hundred sixteen million, three hundred sixty-one thousand, two hundred forty-four".