2520304660 has 24 divisors (see below), whose sum is σ = 5299519176. Its totient is φ = 1006811520.

The previous prime is 2520304639. The next prime is 2520304663. The reversal of 2520304660 is 664030252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 271458576 + 2248846084 = 16476^2 + 47422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520304663) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 66051 + ... + 96970.

It is an arithmetic number, because the mean of its divisors is an integer number (220813299).

Almost surely, 2^2520304660 is an apocalyptic number.

2520304660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520304660 is an abundant number, since it is smaller than the sum of its proper divisors (2779214516).

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

2520304660 is a wasteful number, since it uses less digits than its factorization.

2520304660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163803 (or 163801 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2520304660 is about 50202.6359865695. The cubic root of 2520304660 is about 1360.8732605233.

The spelling of 2520304660 in words is "two billion, five hundred twenty million, three hundred four thousand, six hundred sixty".