2808278328 has 16 divisors (see below), whose sum is σ = 7020695880. Its totient is φ = 936092768.

The previous prime is 2808278327. The next prime is 2808278351. The reversal of 2808278328 is 8238728082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808278323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58505775 + ... + 58505822.

Almost surely, 2^2808278328 is an apocalyptic number.

It is an amenable number.

2808278328 is an abundant number, since it is smaller than the sum of its proper divisors (4212417552).

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

2808278328 is a wasteful number, since it uses less digits than its factorization.

2808278328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117011606 (or 117011602 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The square root of 2808278328 is about 52993.1913362462. The cubic root of 2808278328 is about 1410.8474237905.

The spelling of 2808278328 in words is "two billion, eight hundred eight million, two hundred seventy-eight thousand, three hundred twenty-eight".