3021305680 has 20 divisors (see below), whose sum is σ = 7024535892. Its totient is φ = 1208522240.

The previous prime is 3021305647. The next prime is 3021305681. The reversal of 3021305680 is 865031203.

It can be written as a sum of positive squares in 2 ways, for example, as 1185011776 + 1836293904 = 34424^2 + 42852^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021305681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18883081 + ... + 18883240.

Almost surely, 2^3021305680 is an apocalyptic number.

It is an amenable number.

3021305680 is an abundant number, since it is smaller than the sum of its proper divisors (4003230212).

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

3021305680 is a wasteful number, since it uses less digits than its factorization.

3021305680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37766334 (or 37766328 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3021305680 is about 54966.4050125165. The cubic root of 3021305680 is about 1445.6557537405.

Adding to 3021305680 its reverse (865031203), we get a palindrome (3886336883).

The spelling of 3021305680 in words is "three billion, twenty-one million, three hundred five thousand, six hundred eighty".