216780488 has 16 divisors (see below), whose sum is σ = 407967360. Its totient is φ = 107989200.

The previous prime is 216780469. The next prime is 216780493. The reversal of 216780488 is 884087612.

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, 47828 + ... + 52163.

It is an arithmetic number, because the mean of its divisors is an integer number (25497960).

Almost surely, 2^216780488 is an apocalyptic number.

It is an amenable number.

216780488 is a deficient number, since it is larger than the sum of its proper divisors (191186872).

216780488 is a wasteful number, since it uses less digits than its factorization.

216780488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100268 (or 100264 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 216780488 is about 14723.4672546924. The cubic root of 216780488 is about 600.7218053875.

The spelling of 216780488 in words is "two hundred sixteen million, seven hundred eighty thousand, four hundred eighty-eight".