217082956 has 12 divisors (see below), whose sum is σ = 392150080. Its totient is φ = 105040080.

The previous prime is 217082953. The next prime is 217082977. The reversal of 217082956 is 659280712.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (217082953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875211 + ... + 875458.

Almost surely, 2^217082956 is an apocalyptic number.

It is an amenable number.

217082956 is a deficient number, since it is larger than the sum of its proper divisors (175067124).

217082956 is a wasteful number, since it uses less digits than its factorization.

217082956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750704 (or 1750702 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 217082956 is about 14733.7353037171. The cubic root of 217082956 is about 601.0010658866.

The spelling of 217082956 in words is "two hundred seventeen million, eighty-two thousand, nine hundred fifty-six".