2808840456 has 64 divisors (see below), whose sum is σ = 7847539200. Its totient is φ = 930855744.

The previous prime is 2808840451. The next prime is 2808840469. The reversal of 2808840456 is 6540488082.

2808840456 is a `hidden beast` number, since 2 + 80 + 88 + 40 + 456 = 666.

It is not an unprimeable number, because it can be changed into a prime (2808840451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216 + ... + 74951.

It is an arithmetic number, because the mean of its divisors is an integer number (122617800).

Almost surely, 2^2808840456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2808840456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3923769600).

2808840456 is an abundant number, since it is smaller than the sum of its proper divisors (5038698744).

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

2808840456 is a wasteful number, since it uses less digits than its factorization.

2808840456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75355 (or 75345 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 2808840456 is about 52998.4948465520. The cubic root of 2808840456 is about 1410.9415531037.

The spelling of 2808840456 in words is "two billion, eight hundred eight million, eight hundred forty thousand, four hundred fifty-six".