216229152 has 24 divisors (see below), whose sum is σ = 567601776. Its totient is φ = 72076352.

The previous prime is 216229129. The next prime is 216229157. The reversal of 216229152 is 251922612.

216229152 is digitally balanced in base 3, because in such base 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 (24).

It is not an unprimeable number, because it can be changed into a prime (216229157) 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, 1126098 + ... + 1126289.

It is an arithmetic number, because the mean of its divisors is an integer number (23650074).

Almost surely, 2^216229152 is an apocalyptic number.

It is an amenable number.

216229152 is an abundant number, since it is smaller than the sum of its proper divisors (351372624).

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

216229152 is a wasteful number, since it uses less digits than its factorization.

216229152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252400 (or 2252392 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 216229152 is about 14704.7322995014. The cubic root of 216229152 is about 600.2121027896.

The spelling of 216229152 in words is "two hundred sixteen million, two hundred twenty-nine thousand, one hundred fifty-two".