216246012 has 12 divisors (see below), whose sum is σ = 504574056. Its totient is φ = 72082000.

The previous prime is 216245971. The next prime is 216246029. The reversal of 216246012 is 210642612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 9010239 + ... + 9010262.

It is an arithmetic number, because the mean of its divisors is an integer number (42047838).

Almost surely, 2^216246012 is an apocalyptic number.

It is an amenable number.

216246012 is an abundant number, since it is smaller than the sum of its proper divisors (288328044).

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

216246012 is a wasteful number, since it uses less digits than its factorization.

216246012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18020508 (or 18020506 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 216246012 is about 14705.3055731596. The cubic root of 216246012 is about 600.2277024639.

Adding to 216246012 its reverse (210642612), we get a palindrome (426888624).

The spelling of 216246012 in words is "two hundred sixteen million, two hundred forty-six thousand, twelve".