216771304 has 16 divisors (see below), whose sum is σ = 427838400. Its totient is φ = 102681072.

The previous prime is 216771287. The next prime is 216771311. The reversal of 216771304 is 403177612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712912 + ... + 713215.

It is an arithmetic number, because the mean of its divisors is an integer number (26739900).

Almost surely, 2^216771304 is an apocalyptic number.

It is an amenable number.

216771304 is a deficient number, since it is larger than the sum of its proper divisors (211067096).

216771304 is a wasteful number, since it uses less digits than its factorization.

216771304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426152 (or 1426148 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 216771304 is about 14723.1553683305. The cubic root of 216771304 is about 600.7133219872.

The spelling of 216771304 in words is "two hundred sixteen million, seven hundred seventy-one thousand, three hundred four".