216242512 has 10 divisors (see below), whose sum is σ = 418969898. Its totient is φ = 108121248.

The previous prime is 216242503. The next prime is 216242599. The reversal of 216242512 is 215242612.

It can be written as a sum of positive squares in only one way, i.e., 212693056 + 3549456 = 14584^2 + 1884^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6757563 + ... + 6757594.

Almost surely, 2^216242512 is an apocalyptic number.

It is an amenable number.

216242512 is a deficient number, since it is larger than the sum of its proper divisors (202727386).

216242512 is a wasteful number, since it uses less digits than its factorization.

216242512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13515165 (or 13515159 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 216242512 is about 14705.1865680106. The cubic root of 216242512 is about 600.2244641641.

The spelling of 216242512 in words is "two hundred sixteen million, two hundred forty-two thousand, five hundred twelve".