216303888 has 20 divisors (see below), whose sum is σ = 558785168. Its totient is φ = 72101280.

The previous prime is 216303883. The next prime is 216303943. The reversal of 216303888 is 888303612.

It is not an unprimeable number, because it can be changed into a prime (216303881) 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, 2253118 + ... + 2253213.

Almost surely, 2^216303888 is an apocalyptic number.

It is an amenable number.

216303888 is an abundant number, since it is smaller than the sum of its proper divisors (342481280).

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

216303888 is a wasteful number, since it uses less digits than its factorization.

216303888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506342 (or 4506336 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 216303888 is about 14707.2733026894. The cubic root of 216303888 is about 600.2812459251.

The spelling of 216303888 in words is "two hundred sixteen million, three hundred three thousand, eight hundred eighty-eight".