216442882 has 4 divisors (see below), whose sum is σ = 324664326. Its totient is φ = 108221440.

The previous prime is 216442873. The next prime is 216442901. The reversal of 216442882 is 288244612.

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

It can be written as a sum of positive squares in only one way, i.e., 207388801 + 9054081 = 14401^2 + 3009^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54110719 + ... + 54110722.

Almost surely, 2^216442882 is an apocalyptic number.

216442882 is a deficient number, since it is larger than the sum of its proper divisors (108221444).

216442882 is a wasteful number, since it uses less digits than its factorization.

216442882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108221443.

The product of its digits is 49152, while the sum is 37.

The square root of 216442882 is about 14711.9978928764. The cubic root of 216442882 is about 600.4097959743.

The spelling of 216442882 in words is "two hundred sixteen million, four hundred forty-two thousand, eight hundred eighty-two".