217040108 has 6 divisors (see below), whose sum is σ = 379820196. Its totient is φ = 108520052.

The previous prime is 217040081. The next prime is 217040111. The reversal of 217040108 is 801040712.

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 as a sum of consecutive naturals, namely, 27130010 + ... + 27130017.

It is an arithmetic number, because the mean of its divisors is an integer number (63303366).

Almost surely, 2^217040108 is an apocalyptic number.

It is an amenable number.

217040108 is a deficient number, since it is larger than the sum of its proper divisors (162780088).

217040108 is a wasteful number, since it uses less digits than its factorization.

217040108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54260031 (or 54260029 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 217040108 is about 14732.2811539829. The cubic root of 217040108 is about 600.9615212679.

The spelling of 217040108 in words is "two hundred seventeen million, forty thousand, one hundred eight".