2568492780 has 144 divisors (see below), whose sum is σ = 8389495296. Its totient is φ = 585432960.

The previous prime is 2568492761. The next prime is 2568492803. The reversal of 2568492780 is 872948652.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1266127 + ... + 1268153.

It is an arithmetic number, because the mean of its divisors is an integer number (58260384).

Almost surely, 2^2568492780 is an apocalyptic number.

2568492780 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 2568492780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4194747648).

2568492780 is an abundant number, since it is smaller than the sum of its proper divisors (5821002516).

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

2568492780 is a wasteful number, since it uses less digits than its factorization.

2568492780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 2568492780 is about 50680.2997228706. The cubic root of 2568492780 is about 1369.4918427249.

The spelling of 2568492780 in words is "two billion, five hundred sixty-eight million, four hundred ninety-two thousand, seven hundred eighty".