2520856320 has 144 divisors (see below), whose sum is σ = 8328972960. Its totient is φ = 649019392.

The previous prime is 2520856309. The next prime is 2520856333. The reversal of 2520856320 is 236580252.

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 15 ways as a sum of consecutive naturals, for example, 100042 + ... + 122678.

It is an arithmetic number, because the mean of its divisors is an integer number (57840090).

Almost surely, 2^2520856320 is an apocalyptic number.

2520856320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520856320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4164486480).

2520856320 is an abundant number, since it is smaller than the sum of its proper divisors (5808116640).

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

2520856320 is a wasteful number, since it uses less digits than its factorization.

2520856320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690 (or 22676 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2520856320 is about 50208.1300189521. The cubic root of 2520856320 is about 1360.9725454214.

The spelling of 2520856320 in words is "two billion, five hundred twenty million, eight hundred fifty-six thousand, three hundred twenty".