216982442 has 8 divisors (see below), whose sum is σ = 327658500. Its totient is φ = 107762944.

The previous prime is 216982417. The next prime is 216982457. The reversal of 216982442 is 244289612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 216119401 + 863041 = 14701^2 + 929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 216982396 and 216982405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363767 + ... + 364362.

Almost surely, 2^216982442 is an apocalyptic number.

216982442 is a deficient number, since it is larger than the sum of its proper divisors (110676058).

216982442 is a wasteful number, since it uses less digits than its factorization.

216982442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728280.

The product of its digits is 55296, while the sum is 38.

The square root of 216982442 is about 14730.3238932482. The cubic root of 216982442 is about 600.9082928316.

The spelling of 216982442 in words is "two hundred sixteen million, nine hundred eighty-two thousand, four hundred forty-two".