216868552 has 16 divisors (see below), whose sum is σ = 407862000. Its totient is φ = 108105360.

The previous prime is 216868537. The next prime is 216868559. The reversal of 216868552 is 255868612.

216868552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216868499 and 216868508.

It is not an unprimeable number, because it can be changed into a prime (216868559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38302 + ... + 43597.

It is an arithmetic number, because the mean of its divisors is an integer number (25491375).

Almost surely, 2^216868552 is an apocalyptic number.

It is an amenable number.

216868552 is a deficient number, since it is larger than the sum of its proper divisors (190993448).

216868552 is a wasteful number, since it uses less digits than its factorization.

216868552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82236 (or 82232 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 216868552 is about 14726.4575509523. The cubic root of 216868552 is about 600.8031392806.

The spelling of 216868552 in words is "two hundred sixteen million, eight hundred sixty-eight thousand, five hundred fifty-two".