216366976 has 64 divisors (see below), whose sum is σ = 497213280. Its totient is φ = 91865088.

The previous prime is 216366967. The next prime is 216366989. The reversal of 216366976 is 679663612.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100180 + ... + 102316.

Almost surely, 2^216366976 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 216366976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248606640).

216366976 is an abundant number, since it is smaller than the sum of its proper divisors (280846304).

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

216366976 is a wasteful number, since it uses less digits than its factorization.

216366976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271 (or 2259 counting only the distinct ones).

The product of its digits is 489888, while the sum is 46.

The square root of 216366976 is about 14709.4179354589. The cubic root of 216366976 is about 600.3396003423.

The spelling of 216366976 in words is "two hundred sixteen million, three hundred sixty-six thousand, nine hundred seventy-six".