216963928 has 16 divisors (see below), whose sum is σ = 430737480. Its totient is φ = 102100608.

The previous prime is 216963919. The next prime is 216963937. The reversal of 216963928 is 829369612.

It is an interprime number because it is at equal distance from previous prime (216963919) and next prime (216963937).

It is a congruent number.

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, 797526 + ... + 797797.

Almost surely, 2^216963928 is an apocalyptic number.

It is an amenable number.

216963928 is a deficient number, since it is larger than the sum of its proper divisors (213773552).

216963928 is a wasteful number, since it uses less digits than its factorization.

216963928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595346 (or 1595342 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 216963928 is about 14729.6954483112. The cubic root of 216963928 is about 600.8912015369.

The spelling of 216963928 in words is "two hundred sixteen million, nine hundred sixty-three thousand, nine hundred twenty-eight".