2564577280 has 96 divisors (see below), whose sum is σ = 6421615200. Its totient is φ = 981139456.

The previous prime is 2564577247. The next prime is 2564577293. The reversal of 2564577280 is 827754652.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 2564577280.

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 7 ways as a sum of consecutive naturals, for example, 230076 + ... + 240964.

It is an arithmetic number, because the mean of its divisors is an integer number (66891825).

Almost surely, 2^2564577280 is an apocalyptic number.

2564577280 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 2564577280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210807600).

2564577280 is an abundant number, since it is smaller than the sum of its proper divisors (3857037920).

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

2564577280 is a wasteful number, since it uses less digits than its factorization.

2564577280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10939 (or 10919 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 46.

The square root of 2564577280 is about 50641.6555811518. The cubic root of 2564577280 is about 1368.7955884262.

The spelling of 2564577280 in words is "two billion, five hundred sixty-four million, five hundred seventy-seven thousand, two hundred eighty".