216225868 has 24 divisors (see below), whose sum is σ = 391228544. Its totient is φ = 104457600.

The previous prime is 216225859. The next prime is 216225881. The reversal of 216225868 is 868522612.

It is a self number, because there is not a number n which added to its sum of digits gives 216225868.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115258 + ... + 117118.

Almost surely, 2^216225868 is an apocalyptic number.

It is an amenable number.

216225868 is a deficient number, since it is larger than the sum of its proper divisors (175002676).

216225868 is a wasteful number, since it uses less digits than its factorization.

216225868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833 (or 2831 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 216225868 is about 14704.6206343448. The cubic root of 216225868 is about 600.2090641822.

The spelling of 216225868 in words is "two hundred sixteen million, two hundred twenty-five thousand, eight hundred sixty-eight".