216983376 has 120 divisors (see below), whose sum is σ = 648333504. Its totient is φ = 67507200.

The previous prime is 216983369. The next prime is 216983381. The reversal of 216983376 is 673389612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369355 + ... + 369941.

Almost surely, 2^216983376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216983376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324166752).

216983376 is an abundant number, since it is smaller than the sum of its proper divisors (431350128).

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

216983376 is a wasteful number, since it uses less digits than its factorization.

216983376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 760 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 216983376 is about 14730.3555965224. The cubic root of 216983376 is about 600.9091550327.

The spelling of 216983376 in words is "two hundred sixteen million, nine hundred eighty-three thousand, three hundred seventy-six".