216716872 has 16 divisors (see below), whose sum is σ = 407784240. Its totient is φ = 107974416.

The previous prime is 216716791. The next prime is 216716887. The reversal of 216716872 is 278617612.

216716872 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 45598 + ... + 50125.

It is an arithmetic number, because the mean of its divisors is an integer number (25486515).

Almost surely, 2^216716872 is an apocalyptic number.

It is an amenable number.

216716872 is a deficient number, since it is larger than the sum of its proper divisors (191067368).

216716872 is a wasteful number, since it uses less digits than its factorization.

216716872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96012 (or 96008 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 216716872 is about 14721.3067354770. The cubic root of 216716872 is about 600.6630374028.

The spelling of 216716872 in words is "two hundred sixteen million, seven hundred sixteen thousand, eight hundred seventy-two".