216933382 has 4 divisors (see below), whose sum is σ = 325400076. Its totient is φ = 108466690.

The previous prime is 216933377. The next prime is 216933397. The reversal of 216933382 is 283339612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54233344 + ... + 54233347.

It is an arithmetic number, because the mean of its divisors is an integer number (81350019).

Almost surely, 2^216933382 is an apocalyptic number.

216933382 is a deficient number, since it is larger than the sum of its proper divisors (108466694).

216933382 is a wasteful number, since it uses less digits than its factorization.

216933382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108466693.

The product of its digits is 46656, while the sum is 37.

The square root of 216933382 is about 14728.6585268313. The cubic root of 216933382 is about 600.8630007137.

The spelling of 216933382 in words is "two hundred sixteen million, nine hundred thirty-three thousand, three hundred eighty-two".