2566705328 has 20 divisors (see below), whose sum is σ = 5425082088. Its totient is φ = 1166684160.

The previous prime is 2566705327. The next prime is 2566705333. The reversal of 2566705328 is 8235076652.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (2566705321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7291601 + ... + 7291952.

Almost surely, 2^2566705328 is an apocalyptic number.

It is an amenable number.

2566705328 is an abundant number, since it is smaller than the sum of its proper divisors (2858376760).

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

2566705328 is a wasteful number, since it uses less digits than its factorization.

2566705328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14583572 (or 14583566 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 2566705328 is about 50662.6620698123. The cubic root of 2566705328 is about 1369.1740858138.

The spelling of 2566705328 in words is "two billion, five hundred sixty-six million, seven hundred five thousand, three hundred twenty-eight".