216335530 has 8 divisors (see below), whose sum is σ = 389403972. Its totient is φ = 86534208.

The previous prime is 216335527. The next prime is 216335533. The reversal of 216335530 is 35533612.

It is an interprime number because it is at equal distance from previous prime (216335527) and next prime (216335533).

It can be written as a sum of positive squares in 2 ways, for example, as 177982281 + 38353249 = 13341^2 + 6193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (216335533) 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, 10816767 + ... + 10816786.

Almost surely, 2^216335530 is an apocalyptic number.

216335530 is a deficient number, since it is larger than the sum of its proper divisors (173068442).

216335530 is a wasteful number, since it uses less digits than its factorization.

216335530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21633560.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 216335530 is about 14708.3489896045. The cubic root of 216335530 is about 600.3105151987.

The spelling of 216335530 in words is "two hundred sixteen million, three hundred thirty-five thousand, five hundred thirty".