216917476 has 12 divisors (see below), whose sum is σ = 380354940. Its totient is φ = 108244640.

The previous prime is 216917461. The next prime is 216917479. The reversal of 216917476 is 674719612.

It can be written as a sum of positive squares in 2 ways, for example, as 83283876 + 133633600 = 9126^2 + 11560^2 .

It is not an unprimeable number, because it can be changed into a prime (216917479) by changing a digit.

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, 51235 + ... + 55306.

It is an arithmetic number, because the mean of its divisors is an integer number (31696245).

Almost surely, 2^216917476 is an apocalyptic number.

It is an amenable number.

216917476 is a deficient number, since it is larger than the sum of its proper divisors (163437464).

216917476 is a wasteful number, since it uses less digits than its factorization.

216917476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107054 (or 107052 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 216917476 is about 14728.1185492241. The cubic root of 216917476 is about 600.8483148527.

The spelling of 216917476 in words is "two hundred sixteen million, nine hundred seventeen thousand, four hundred seventy-six".