216216348 has 12 divisors (see below), whose sum is σ = 504504840. Its totient is φ = 72072112.

The previous prime is 216216337. The next prime is 216216367. The reversal of 216216348 is 843612612.

216216348 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 tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is a congruent number.

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, 9009003 + ... + 9009026.

It is an arithmetic number, because the mean of its divisors is an integer number (42042070).

Almost surely, 2^216216348 is an apocalyptic number.

It is an amenable number.

216216348 is an abundant number, since it is smaller than the sum of its proper divisors (288288492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216216348 is a wasteful number, since it uses less digits than its factorization.

216216348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18018036 (or 18018034 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 216216348 is about 14704.2969230086. The cubic root of 216216348 is about 600.2002553778.

The spelling of 216216348 in words is "two hundred sixteen million, two hundred sixteen thousand, three hundred forty-eight".