216855952 has 20 divisors (see below), whose sum is σ = 426431536. Its totient is φ = 106809120.

The previous prime is 216855907. The next prime is 216855953. The reversal of 216855952 is 259558612.

It is a junction number, because it is equal to n+sod(n) for n = 216855899 and 216855908.

It is not an unprimeable number, because it can be changed into a prime (216855953) 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, 100074 + ... + 102217.

Almost surely, 2^216855952 is an apocalyptic number.

It is an amenable number.

216855952 is a deficient number, since it is larger than the sum of its proper divisors (209575584).

216855952 is a wasteful number, since it uses less digits than its factorization.

216855952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202366 (or 202360 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The square root of 216855952 is about 14726.0297432811. The cubic root of 216855952 is about 600.7915035592.

The spelling of 216855952 in words is "two hundred sixteen million, eight hundred fifty-five thousand, nine hundred fifty-two".