2421216306 has 16 divisors (see below), whose sum is σ = 5380480800. Its totient is φ = 807072084.

The previous prime is 2421216283. The next prime is 2421216307. The reversal of 2421216306 is 6036121242.

2421216306 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 21 + 630 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2421216306.

It is not an unprimeable number, because it can be changed into a prime (2421216307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22418616 + ... + 22418723.

It is an arithmetic number, because the mean of its divisors is an integer number (336280050).

Almost surely, 2^2421216306 is an apocalyptic number.

2421216306 is an abundant number, since it is smaller than the sum of its proper divisors (2959264494).

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

2421216306 is a wasteful number, since it uses less digits than its factorization.

2421216306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44837350 (or 44837344 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2421216306 is about 49205.8564197393. The cubic root of 2421216306 is about 1342.7995798462.

Adding to 2421216306 its reverse (6036121242), we get a palindrome (8457337548).

The spelling of 2421216306 in words is "two billion, four hundred twenty-one million, two hundred sixteen thousand, three hundred six".