2421306644 has 12 divisors (see below), whose sum is σ = 4244634324. Its totient is φ = 1208553984.

The previous prime is 2421306581. The next prime is 2421306653. The reversal of 2421306644 is 4466031242.

It can be written as a sum of positive squares in 2 ways, for example, as 2365655044 + 55651600 = 48638^2 + 7460^2 .

It is a super-3 number, since 3×2421306644³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2421306644.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 522239 + ... + 526854.

It is an arithmetic number, because the mean of its divisors is an integer number (353719527).

Almost surely, 2^2421306644 is an apocalyptic number.

It is an amenable number.

2421306644 is a deficient number, since it is larger than the sum of its proper divisors (1823327680).

2421306644 is a wasteful number, since it uses less digits than its factorization.

2421306644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049674 (or 1049672 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 2421306644 is about 49206.7743710152. The cubic root of 2421306644 is about 1342.8162800366.

Adding to 2421306644 its reverse (4466031242), we get a palindrome (6887337886).

The spelling of 2421306644 in words is "two billion, four hundred twenty-one million, three hundred six thousand, six hundred forty-four".