2520605440 has 36 divisors (see below), whose sum is σ = 6037640784. Its totient is φ = 1008241664.

The previous prime is 2520605411. The next prime is 2520605491. The reversal of 2520605440 is 445060252.

It is a junction number, because it is equal to n+sod(n) for n = 2520605399 and 2520605408.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 983332 + ... + 985891.

It is an arithmetic number, because the mean of its divisors is an integer number (167712244).

Almost surely, 2^2520605440 is an apocalyptic number.

2520605440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520605440 is an abundant number, since it is smaller than the sum of its proper divisors (3517035344).

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

2520605440 is an equidigital number, since it uses as much as digits as its factorization.

2520605440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969244 (or 1969230 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2520605440 is about 50205.6315566292. The cubic root of 2520605440 is about 1360.9273951396.

Adding to 2520605440 its reverse (445060252), we get a palindrome (2965665692).

The spelling of 2520605440 in words is "two billion, five hundred twenty million, six hundred five thousand, four hundred forty".