216935812 has 12 divisors (see below), whose sum is σ = 382627840. Its totient is φ = 107613576.

The previous prime is 216935791. The next prime is 216935821. The reversal of 216935812 is 218539612.

216935812 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 a super-2 number, since 2×216935812² = 94122293056198688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 213012 + ... + 214027.

Almost surely, 2^216935812 is an apocalyptic number.

It is an amenable number.

216935812 is a deficient number, since it is larger than the sum of its proper divisors (165692028).

216935812 is a wasteful number, since it uses less digits than its factorization.

216935812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427170 (or 427168 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 216935812 is about 14728.7410188380. The cubic root of 216935812 is about 600.8652442468.

The spelling of 216935812 in words is "two hundred sixteen million, nine hundred thirty-five thousand, eight hundred twelve".