216280082 has 8 divisors (see below), whose sum is σ = 324483852. Its totient is φ = 108118800.

The previous prime is 216280081. The next prime is 216280139. The reversal of 216280082 is 280082612.

It can be written as a sum of positive squares in 2 ways, for example, as 196308121 + 19971961 = 14011^2 + 4469^2 .

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

It is not an unprimeable number, because it can be changed into a prime (216280081) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10532 + ... + 23312.

Almost surely, 2^216280082 is an apocalyptic number.

216280082 is a deficient number, since it is larger than the sum of its proper divisors (108203770).

216280082 is a wasteful number, since it uses less digits than its factorization.

216280082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21244.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 216280082 is about 14706.4639529698. The cubic root of 216280082 is about 600.2592231746.

The spelling of 216280082 in words is "two hundred sixteen million, two hundred eighty thousand, eighty-two".