217092082 has 4 divisors (see below), whose sum is σ = 325638126. Its totient is φ = 108546040.

The previous prime is 217092053. The next prime is 217092121. The reversal of 217092082 is 280290712.

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., 122788561 + 94303521 = 11081^2 + 9711^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54273019 + ... + 54273022.

Almost surely, 2^217092082 is an apocalyptic number.

217092082 is a deficient number, since it is larger than the sum of its proper divisors (108546044).

217092082 is a wasteful number, since it uses less digits than its factorization.

217092082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108546043.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 217092082 is about 14734.0449978952. The cubic root of 217092082 is about 601.0094876423.

The spelling of 217092082 in words is "two hundred seventeen million, ninety-two thousand, eighty-two".