216216510 has 32 divisors (see below), whose sum is σ = 526033440. Its totient is φ = 56867328.

The previous prime is 216216509. The next prime is 216216527. The reversal of 216216510 is 15612612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47175 + ... + 51554.

It is an arithmetic number, because the mean of its divisors is an integer number (16438545).

Almost surely, 2^216216510 is an apocalyptic number.

216216510 is an abundant number, since it is smaller than the sum of its proper divisors (309816930).

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

216216510 is a wasteful number, since it uses less digits than its factorization.

216216510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98812.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 216216510 is about 14704.3024316014. The cubic root of 216216510 is about 600.2004052776.

The spelling of 216216510 in words is "two hundred sixteen million, two hundred sixteen thousand, five hundred ten".