2564284320 has 432 divisors, whose sum is σ = 9744403032. Its totient is φ = 613416960.

The previous prime is 2564284309. The next prime is 2564284321. The reversal of 2564284320 is 234824652.

2564284320 is a `hidden beast` number, since 2 + 5 + 642 + 8 + 4 + 3 + 2 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1089936 + 2563194384 = 1044^2 + 50628^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2564284321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9977632 + ... + 9977888.

Almost surely, 2^2564284320 is an apocalyptic number.

2564284320 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 2564284320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4872201516).

2564284320 is an abundant number, since it is smaller than the sum of its proper divisors (7180118712).

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

2564284320 is a wasteful number, since it uses less digits than its factorization.

2564284320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 2564284320 is about 50638.7630180675. The cubic root of 2564284320 is about 1368.7434657848.

The spelling of 2564284320 in words is "two billion, five hundred sixty-four million, two hundred eighty-four thousand, three hundred twenty".