216229792 has 12 divisors (see below), whose sum is σ = 425702466. Its totient is φ = 108114880.

The previous prime is 216229787. The next prime is 216229807. The reversal of 216229792 is 297922612.

216229792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 192765456 + 23464336 = 13884^2 + 4844^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3378559 + ... + 3378622.

Almost surely, 2^216229792 is an apocalyptic number.

It is an amenable number.

216229792 is a deficient number, since it is larger than the sum of its proper divisors (209472674).

216229792 is an equidigital number, since it uses as much as digits as its factorization.

216229792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6757191 (or 6757183 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 216229792 is about 14704.7540611872. The cubic root of 216229792 is about 600.2126949629.

The spelling of 216229792 in words is "two hundred sixteen million, two hundred twenty-nine thousand, seven hundred ninety-two".